1966 Mercury S-55 Performance and Racing Products
Find Your Specific 1966 Mercury S-55 Performance and Racing Products
Below you will find various in-demand Mercury Performance and Racing Products, components and accessories for your 1966 S-55. Advance Auto Parts has popular S-55 parts like Performance Fuel Systems, Performance Exhaust Products, Performance Distributors and more. You’ll also find aftermarket and OEM Performance and Racing Products for other S-55 model years including
1967 and more. Select a category of 1966 Mercury S-55 Performance and Racing Products below and start saving instantly.
Popular 1966 Mercury S-55 Performance and Racing Products Categories
Essential Performance and Racing Products for 1966 Mercury S-55s
Accel – Accel Spark Plug Wire Set – 8mm – Universal – Red Wire with Red Straight Boots – 5040R 8mm super stock universal fit spark plug wires feature a spi… (Part No.5040R)
from
$116.99
The traditional ACCEL combination of yellow wire and red spark plug boots has been added to these SuperStock Spiral Core 5000 Series wire sets, which feature color-matched wire and spark plug boots in blue, black, and red. With only 500 ohms/ft. of resistance, more ignition energy can reach the spark plug, producing a longer-lasting, hotter spark flame kernel. The results is higher performance through improved efficiency, quicker throttle response, and reduced emissions. This 8mm wire’s double silicone construction is rated to 550 degrees F. The high-gloss wire jacket resists moisture, chemicals, and heat extremes for longer life and great looks. The fiberglass braid adds greater pull strength and terminal retention, while the stainless steel spark plug terminals provide excellent long life, electrical conductivity, and corrosion resistance. Both universal and custom-fit applications are available for early and late model cars and trucks.
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Accel – Accel Contact And Condenser Kit, 8203 (Part No.8203)
from
$92.79
Regain horsepower and economy for your street machine with new contact and condenser kit. Large tungsten contacts provide crisp coil firing and perform solidly up to 5,000 RPM. Condenser’s special winding protects from pitting of point contacts. Heavy duty 23 ounce points.
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Edelbrock – Edelbrock Water Pump Ford FE 352-428 1965-76 in Satin Finish, 8805 (Part No.8805)
from
$400.99
Maximum cooling for street and racing engines. Internal passages are balanced for maximum flow. Impeller is larger than others for maximum pressure. Impeller vanes dramatically increase flow rates. Equal distribution to both sides of block. Only flows in one direction for optimum efficiency. In the early days of the automotive performance industry, you either ran what was available, or you fabricated something you thought met your needs. Such needs were the building blocks of this industry, and it was through the efforts of many that we have the automotive aftermarket, but it was through the work of one name in particular to which many in the industry owe a great debt, and that name is Edelbrock.
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Edelbrock – Edelbrock Valve Cover Gasket Set for Ford, Excellent Sealing Inegrity & Easy Installation, 7568 (Part No.7568)
from
$43.99
The Edelbrock valve cover gaskets No: 7568 provide excellent sealing integrity and conformability for easy installation. The multi-layer construction has two highly compressible, high rubber content, fiber-reinforced outside layers which are chemically bonded to a high strength composite core. This unique core-reinforced construction has a radial strength to resist high-vacuum or blow-out conditions. Edelbrock valve cover gaskets are an Edelbrock product.
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Mr. Gasket – Mr. Gasket Alternator: Remanufactured, 80 Amps, 5124 (Part No.5124)
from
$449.99
“Upgrade your vehicle’s charging system with this remanufactured 80-amp alternator, designed to exceed original equipment specifications for superior reliability. Featuring a Ford 1G small case design, this alternator is compatible with most 1961-’85 Ford vehicles and works seamlessly with OEM-style external regulators. Its chrome-plated finish not only enhances durability but also adds a sleek, polished look under the hood. With a 6.875″” bolt spacing and a 1-groove V-belt pulley included, installation is straightforward and hassle-free. Operating at 12 volts, this alternator delivers consistent performance, making it an ideal replacement for your original unit. Built for dependability and style, its the perfect choice for restoring or upgrading your classic Ford.”
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Holley – Holley 4150 ALUM DP 650 ELECT CHOKE, 0-4777SAE (Part No.0-4777SAE)
from
$699.99
Holley upgraded their two most popular sizes of double pumper with electric chokes. The 650 and 750 CFM models are available in the classic zinc and shiny polished finishes.
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FEL-PRO Performance – FEL-PRO Performance PERFORMANCE EXHAUST MANIFOLD GASKET SET, 1442 (Part No.1442)
from
$33.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions
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Lakewood – Lakewood Drag Shock-70/30:Ford/GM/Mopar, 40121 (Part No.40121)
from
$126.99
The best all-round choice for vehicles with leaf or coil springs. Properly loads rear wheels to prevent over-reaction and wheel hop.
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Edelbrock – Edelbrock Performer-Plus Camshaft Kit, 2106 (Part No.2106)
from
$392.99
“Edelbrock Performer-Plus Camshaft No: 2106 is designed for 352-428 Ford V8 engines and produce optimum torque from the low-end to the mid-range. Performer-Plus camshafts should be matched with Performer manifolds for vehicles operating from off-idle to 5500 rpm. The Performer-Plus No: 2106 is a smooth idling cam for daily drivers, trucks, vans, RVs and 4x4s. You can expect a major improvement in throttle response and torque. In the manifold section you’ll find torque graphs showing the power gains from Performer manifolds and Performer-Plus cams. All camshafts include flat tappet lifters (except for cams designed for use with stock roller lifters), assembly lube and instructions. This cam produced 410 Ft Lbs of Torque when paired with Performer 390 intake manifold No: 2105 and stock cylinder heads. Will not work in 427 side-oilers. Camshaft specifications: – Intake duration: 194 Degrees – Exhaust duration: 204 Degrees – Intake lift: .460″” – Exhaust lift: .480″” – Lobe separation: 110 Degree – Intake Center Line: 105 Degree – Vacuum: 16″””
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Edelbrock – Edelbrock Sure Seat Valve Springs, 5792 (Part No.5792)
from
$157.99
The Edelbrock No: 5792 Sure Seat Valve Spring for Chrysler 383-400-413-440 V8 1969-79 O.E Cast iron cylinder heads are made of highest quality spring wire and precision wound to close tolerances, our Sure Seat Valve Spring sets are for use on original equipment heads when installing Edelbrock Performer-Plus, Performer RPM and Torker-Plus camshafts. These are the same high-performance springs used on Edelbrock Performer and RPM cylinder heads. For camshaft warranty compliance, use only the springs recommended by Edelbrock for each camshaft application.
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Mr. Gasket – Mr. Gasket Thermocap Radiator Cap, 2470R (Part No.2470R)
from
$58.99
The fastest, easiest way to know exactly when it’s safe to open your radiator cap. ThermoCap, with its built-in calibrated thermometer, indicates the coolant temperature.
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FEL-PRO Performance – FEL-PRO Performance PERFORMANCE INTAKE MANIFOLD GASKET SET, 1246 (Part No.1246)
from
$39.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions
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Competition Cams – Competition Cams High Energy 218/218 Hydraulic Flat Cam, 33-224-3 (Part No.33-224-3)
from
$297.99
HYDRAULIC – High Energy: Good upgrade for factory performance cams in 390-428. Noticeable idle.
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Holley – Holley Street Carburetor: 600 CFM, Electric Choke, 4 Barrel, Square Bore, Dual Inlet, Shiny, 0-80458SA (Part No.0-80458SA)
from
$528.99
The Street HP uses the best features from Holley’s race Bred 4150 HP carbs, but tamed for street and light competition use. The contoured main body from the 4150 HP has a tumble polished shiny finish. The metering system includes a timed spark port for a vacuum advance distributor and is calibrated for a hot street and strip engine setup for outstanding throttle response and drivability. A street HP base plate is used so there are plenty of vacuum ports for power brakes, PCV, etc.
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Accel – Accel Points Eliminator Kit for Ford Motorcraft Points Distributors, 2020 (Part No.2020)
from
$117.99
Put and end to high maintenance point ignition systes by utilizing a specialized electronic circuitry and infrared signal. Stabalizes ignition timing from 1 to 10,000 RPM. Improves performance and fuel efficiency, easy to install with hand tools, reduces maintenance. It is built with the latest thermal clad based surface mount construction for maximum dependability and long life.
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Sniper Motorsports – Sniper Motorsports Sniper Stealth 4150 Master Kit – Shiny, 550-870K (Part No.550-870K)
from
$1899.99
Holley’s Sniper Stealth 4150 Master Kit gives you carburetor styling but functions just like the Sniper! A 4150 stealth is a great way to upgrade your ride to fuel injection in a cost-efficient way with just 4 simple connections required. Take your build to the next level and take advantage of improved engine performance, better MPG’s and easier starting. This kit supports up to 650hp naturally aspirated and 600hp boosted with Four 100 Lb./Hr injectors!.
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Accel – Accel Ignition Coil – Yellow – 42000v 1.4 ohm primary – Points – up to 6500 RPM – The 8140 super stock ignition coil is a canister style coil that … (Part No.8140)
from
$49.99
Excellent high performance replacement for import and domestic vehicles with canister type oil filled coil. Re-engineered windings for even higher energy output resulting in quicker starting improved throttle response and more high RPM power. Designed to work with Points style and Breakerless electronic ignition systems. Heavy duty black Alkyd tower provides in flashover in protection to primary terminals. ACCEL Yellow can. 42000 volts effective up to 6500 RPM 1.4 ohms on the primary.
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Competition Cams – Competition Cams High Energy 206/206 Hydraulic Flat Cam K-Kit, K33-221-3 (Part No.K33-221-3)
from
$592.99
Ideal for use with mainly stock components like rocker arms, intake manifolds, cylinder heads, compression ratio, torque converters and rear gear ratios, the High Energy camshaft grind family is a great choice for street performance applications.
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B & M – B & M Automatic Shifter – Pro Ratchet – Universal, 80842 (Part No.80842)
from
$460.99
“Track-favorite simplicity with bulletproof execution: the Pro Ratchet self-centers after each shift, won’t over-shift, and integrates a one-hand reverse lockout meeting NHRA/IHRA rules. It adds a brushed cover, classic white knob, neutral safety and backup-light switches, gear indicator, 5-ft Super-Duty cable, brackets, levers, and hardware for most Chrysler, Ford, and GM 3-/4-speeds (install kits may be required). Overall: 10.75″” L x 2.9″” W x 9.25″” H.”
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MSD Ignition – MSD Ignition , 5093 (Part No.5093)
from
$959.99
MSD Ignition , 5093. PERFORMANCE PARTS>PERFORMANCE IGNITION/STARTING/CHARGING>STARTERS>STARTERS from MSD Ignition
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B & M – B & M Automatic Shifter – Megashifter – Light Truck, 80680 (Part No.80680)
from
$561.99
“A taller (14.85″”) MegaShifter tailored for trucks and bench seats, combining positive ratcheting shifts that prevent over-shifting with an NHRA/IHRA-compliant reverse lockout. The package includes a trim-to-fit console, T-handle with accordion boot, 5-ft cable, brackets, levers, and a lighted gear indicator-plus compatibility across popular Chrysler, Ford, and GM 3-/4-speed autos (install kits may be required; see applications). Overall: 14.9″” L x 6.4″” W x 14.8″” H.”
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Holley – Holley Mechanical Fuel Pump, 12-390-11 (Part No.12-390-11)
from
$249.99
Mechanical fuel pump made from heavy duty construction for continuous high RPM operation. Fuel body casting can be rotated to accommodate various plumbing situations. Fuel pressure regulator is not required.
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Edelbrock – Edelbrock Performer 390 Intake Manifold for Ford FE, Satin Finish, 2105 (Part No.2105)
Hays – Hays Flexplt: Bb Ford 70-97 (164T), 12-055 (Part No.12-055)
B & M – B & M Holeshot 2400, 40412 (Part No.40412)
from
$899.99
This B&M Holeshot 2400 fits 1966-91 Ford C6 transmissions with 1.848-inch crank pilot and a 11.4-inch bolt circle. The Holeshot converters are an excellent choice for vehicles with engine modifications, particularly big cams that tend to reduce low end power and torque. The higher stall speed of this converter will launch the car in a higher rpm range where more torque is readily available, resulting in quicker acceleration. Holeshot converters feature furnace brazed impeller fins and turbine, new precision alloy impeller hub and new heavy duty needle bearings. Other features include fully balanced and pressure tested by expert technicians. If your vehicle is equipped with a plate type nitrous system or supercharger, please refer to the Nitrous Holeshot line of converters. Notes: Stall speed listings are based on engines producing 230lb. ft. of torque at 2,500 rpm. More torque at 2,500 rpm will give you more stall speed, less torque at 2,500 rpm will give you less stall speed than the stall speed ratings indicated. Higher stall converters can generate more heat, so we highly recommend adding a transmission cooler. This converter is Not recommended for supercharged, plate-type nitrous oxide or trans-brake applications. The product images shown are for illustration purposes only and may not be an exact representation of the product.
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Competition Cams – "Competition Cams SUPER VALVE LOCKS, 3/8"" 1 ST, 612-16" (Part No.612-16)
from
$43.99
Inside tang-to-taper relationship held tightly for repeatable valve spring installed heights
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Edelbrock – Edelbrock Engine Gasket Set, 7368 (Part No.7368)
from
$162.99
The Edelbrock No: 7368 head gaskets provide the best sealing solution and are matched to Edelbrock cylinder heads for optimal performance. Edelbrock relies on industry leading head gasket manufactures to ensure our head gasket sets will provide the best fit and sealing properties when used with Edelbrock aluminum cylinder heads. Edelbrock head gaskets are manufactured from high-density materials and feature a superior design that performs under pressure and provides a long-lasting seal, without re-torqueing.
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Mallory – Mallory Unilite Ignition Module, 605 (Part No.605)
from
$99.99
Requires a 1.4 ohms Ballast resistor, Loom resistor or internally resisted coil.
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Upgrade your 1966 Mercury S-55 with Top-Quality Performance and Racing Products
When it comes to maintaining or upgrading your 1966 Mercury S-55, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Mercury or enhancing its overall performance, Performance and Racing Products are key to keeping your S-55 functioning at its best. At Advance Auto Parts, we offer a wide selection of 125 Performance and Racing Products for the 1966 Mercury S-55, designed to meet your needs without breaking the bank.
From
Performance Fuel System
replacements to
Performance Exhaust Products
upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.
Affordable Prices and Wide Selection
Shopping for Performance and Racing Products for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Performance and Racing Products for your 1966 Mercury S-55 at great prices.
Our Performance and Racing Products inventory for this model
ranges from just $33.99 to $2,249.99, with
an average price of $756.27.
Our 125 Performance and Racing Products in stock come from 16 trusted brands, so you’re sure to find the right part for your 1966 Mercury S-55 without overspending.
Top Brands and High Customer Satisfaction
Advance Auto Parts takes pride in offering only the best brands in the automotive industry. For your 1966 Mercury S-55, we stock popular OEM and aftermarket Performance and Racing Products from top names
like Edelbrock, B & M, Holley, and more.
Edelbrock Performance and Racing Products
start at just $450.99 and boast an impressive 4.4 stars average rating from customers.
B & M and Holley also bring quality to the table, with Performance and Racing Products available starting at $299.99, and at an average 4.3 stars rating.
With 1,015 customer reviews and counting, our 1966 Mercury S-55 Performance and Racing Products have a strong track record of reliability, ensuring you can trust your purchase.
Explore Related Parts and More
While you’re here, don’t forget to check out other essential categories that go hand in hand with Performance and Racing Product upgrades. Explore related part types like Batteries and Chargers, Fluids and Chemicals
and more to make sure your 1966 Mercury S-55 is always ready to roll. We’re committed to providing you with everything you need to keep your S-55 in top shape, all in one place.
Start shopping confidently below for your 1966 Mercury S-55!
Best-Selling Performance Fuel Systems for 1966 Mercury S-55s
Enhance the driving experience in your Mercury with 59 quality Performance Fuel System components, starting at $249.99.
Edelbrock – Edelbrock Performer 1411 Carburetor: 750 CFM, 4 Barrel, Square Bore, Electric Choke Inlet (Part No.1411)
from
$519.99
“The Edelbrock 1411 Performer Series 750 CFM electric choke carburetor is a precisely tuned, quality-built carburetor that can handle the rigors of daily driving while delivering consistent, reliable street performance from day to day. Several characteristics make the 1411 Performer Series 750 CFM electric choke carburetor an outstanding street performer. The first one is that metering rods are utilized to transition between circuits. The carburetor is unaffected by engine backfires, which means that there are no power valves to blow out, and the rods can be changed in seconds without carburetor removal or fuel draining. Secondly, the carburetor has the unique ability to “”hold a tune””, so once it is tuned, the carburetor stay’s tuned. What this means to you is that compared to other carburetors, the performance remains consistent and the calibration stays unchanged. The lightweight all-aluminum body features a two-piece body that resists warping and is compatible with gasohol and blended fuels. The simple tub-type bowls and rear-pivot floats all contribute to a carburetor that’s reliable, user-friendly and is easily tunable for miles and miles of trouble-free operation.”
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Edelbrock – Edelbrock AVS2 1906 Carburetor: 650 CFM, 4 Barrel, Square Bore, Electric Choke Inlet (Part No.1906)
from
$469.99
“The Edelbrock AVS2 Series #1906 is a satin-finished four-barrel carburetor with electric choke that is designed and calibrated for optimum street performance in engines that require an air-fuel flow of 650 CFM. The AVS2 is a perfect replacement or upgrade that features annular flow primary boosters with a new calibration for improved off-idle and cruising performance. The annular flow booster design delivers improved fuel atomization to eliminate flat spots that may be encountered as the carburetor transitions from idle to full throttle. Each annular flow booster features eight equally spaced orifices to improve fuel metering from idle to the main circuit. The improved flow metering makes this carburetor ideal for use with a wide variety of small- and big-block engines with either dual- or single-plane intake manifolds. The Edelbrock AVS2 #1906 includes both timed and full vacuum ports for ignition advance. It comes with: .101 primary and.098 secondary metering jets; .070 x .037 metering rods; orange (5″” Hg) step-up spring. Use our Carburetor Stud Kits #8008 or #8024 if needed. Match with a variety of manifolds that include Edelbrock Performer, Performer EPS, RPM Air-Gap, Performer RPM, Torker II or other brands of similar design. For a black-finished AVS2 with electric choke, order part #19063.”
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Edelbrock – Edelbrock Performer 1406 Carburetor: 600 CFM, 4 Barrel, Square Bore, Electric Choke Inlet (Part No.1406)
from
$450.99
“The Edelbrock 1406 Performer Series 600 CFM electric choke carburetor is a precisely tuned, quality-built carburetor that can handle the rigors of daily driving while delivering consistent, reliable street performance from day to day. Several characteristics make the 1406 Performer Series 600 CFM electric choke carburetor an outstanding street performer. The first one is that metering rods are utilized to transition between circuits. The carburetor is unaffected by engine backfires, which means that there are no power valves to blow out, and the rods can be changed in seconds without carburetor removal or fuel draining. Secondly, the carburetor has the unique ability to “”hold a tune””, so once it is tuned, the carburetor stay’s tuned. What this means to you is that compared to other carburetors, the performance remains consistent and the calibration stays unchanged. The lightweight all-aluminum body features a two-piece body that resists warping and is compatible with gasohol and blended fuels. The simple tub-type bowls and rear-pivot floats all contribute to a carburetor that’s reliable, user-friendly and is easily tunable for miles and miles of trouble-free operation.”
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Holley – Holley Street Carburetor: 600 CFM, Electric Choke, 4 Barrel, Square Bore, Single Inlet, Shiny, 0-80457S (Part No.0-80457S)
from
$499.99
Holley’s new 0-80457SA is constructed from aluminum which compared to its zinc counterpart equates to a weight savings of 40%! Holley’s aluminum 0-80457SA will hold its shine longer and also can be hand polished for a custom look! Its 600 CFM of airflow, vacuum secondaries, and single fuel inlet makes it amazingly universal. Add to that an electric choke and this carb is super easy to use on almost anything. Don’t trust your performance to just anyone, Holley is the only modular carburetor company that has been in business for over 100 years and has powered every NASCAR champion since the 60’s.
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Edelbrock – Edelbrock Performer 1405 Carburetor: 600 CFM, 4 Barrel, Square Bore, Manual Choke Inlet (Part No.1405)
from
$414.99
“The Edelbrock 1405 Performer Series 600 CFM manual choke carburetor is a precisely tuned, quality-built carburetor that can handle the rigors of daily driving while delivering consistent, reliable street performance from day to day. Several characteristics make the 1405 Performer Series 600 CFM manual choke carburetor an outstanding street performer. The first one is that metering rods are utilized to transition between circuits. The carburetor is unaffected by engine backfires, which means that there are no power valves to blow out, and the rods can be changed in seconds without carburetor removal or fuel draining. Secondly, the carburetor has the unique ability to “”hold a tune””, so once it is tuned, the carburetor stay’s tuned. What this means to you is that compared to other carburetors, the performance remains consistent and the calibration stays unchanged. The lightweight all-aluminum body features a two-piece body that resists warping and is compatible with gasohol and blended fuels. The simple tub-type bowls and rear-pivot floats all contribute to a carburetor that’s reliable, user-friendly and is easily tunable for miles and miles of trouble-free operation.”
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Edelbrock – Edelbrock Performer 1407 Carburetor: 750 CFM, 4 Barrel, Square Bore, Manual Choke Inlet (Part No.1407)
from
$474.99
“The Edelbrock 1407 Performer Series 750 CFM manual choke carburetor is a precisely tuned, quality-built carburetor that can handle the rigors of daily driving while delivering consistent, reliable street performance from day to day. Several characteristics make the 1407 Performer Series 750 CFM manual choke carburetor an outstanding street performer. The first one is that metering rods are utilized to transition between circuits. The carburetor is unaffected by engine backfires, which means that there are no power valves to blow out, and the rods can be changed in seconds without carburetor removal or fuel draining. Secondly, the carburetor has the unique ability to “”hold a tune””, so once it is tuned, the carburetor stay’s tuned. What this means to you is that compared to other carburetors, the performance remains consistent and the calibration stays unchanged. The lightweight all-aluminum body features a two-piece body that resists warping and is compatible with gasohol and blended fuels. The simple tub-type bowls and rear-pivot floats all contribute to a carburetor that’s reliable, user-friendly and is easily tunable for miles and miles of trouble-free operation.”
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Holley – Holley Prem Street Carbs (Avengers), 0-80770 (Part No.0-80770)
from
$699.99
Square flange bolt pattern. Performance calibrated. The ultimate vacuum secondary street performance upgrade.
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Holley – Holley Street/Strip Carbs, 0-9776 (Part No.0-9776)
from
$659.99
Replace your old carburetor with original Holley performance 4160 carburetors. Budget-minded enthusiasts, like you, will be rewarded with maximum performance from your stock or mildly-modified engine. These Holley 4160 adjustable float carburetors are easier to tune than full race carburetors with temperamental secondary metering blocks and dual pumps. Plus, they’re available in your choice of universal or direct fit OE replacement versions with all emission provisions. Bolt-on installation and improved performance; no wonder when car guys think of carburetors, they think of Holley 4160 carburetors!
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Holley – Holley Street Carburetor: 670 CFM, Electric Choke, 4 Barrel, Square Bore, Dual Inlet, Shiny, 0-80670 (Part No.0-80670)
from
$699.99
Square flange bolt pattern. Performance calibrated. The ultimate vacuum secondary street performance upgrade.
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Holley – Holley Street Carbs, 0-80508S (Part No.0-80508S)
from
$539.99
One of the most widely used Holley carbs of all times -the 0-80508S! Its dual feed fuel inlets assure you get all the fuel you need and its 750 CFM of airflow makes it the perfect performance upgrade carb. Its vacuum secondaries and electric choke make it super easy to use on a wide range of vehicles. Don’t trust your performance to just anyone, Holley is the only modular carburetor company that has been in business for over 100 years and has powered every NASCAR champion since the 60’s.
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Edelbrock – Edelbrock Performer Remanufactured Carburetor, 600 CFM With Manual Choke, Satin Finish (Non-EGR), 9905 (Part No.9905)
from
$437.99
“The Edelbrock 9905 Remanufactured Performer Series 600 CFM manual choke carburetor is a precisely tuned, quality-built carburetor that can handle the rigors of daily driving while delivering consistent, reliable street performance from day to day. Several characteristics make the 9905 Remanufactured Performer Series 600 CFM manual choke carburetor an outstanding street performer. The first one is that metering rods are utilized to transition between circuits. The carburetor is unaffected by engine backfires, which means that there are no power valves to blow out, and the rods can be changed in seconds without carburetor removal or fuel draining. Secondly, the carburetor has the unique ability to “”hold a tune””, so once it is tuned, the carburetor stay’s tuned. What this means to you is that compared to other carburetors, the performance remains consistent and the calibration stays unchanged. The lightweight all-aluminum body features a two-piece body that resists warping and is compatible with gasohol and blended fuels. The simple tub-type bowls and rear-pivot floats all contribute to a carburetor that’s reliable, user-friendly and is easily tunable for miles and miles of trouble-free operation.”
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Holley – Holley Street Carbs, 0-1850S (Part No.0-1850S)
from
$491.99
The Street HP uses the best features from Holley’s race Bred 4150 HP carbs, but tamed for street and light competition use. The contoured main body from the 4150 HP has a tumble polished shiny finish. The metering system includes a timed spark port for a vacuum advance distributor and is calibrated for a hot street and strip engine setup for outstanding throttle response and drivability. A street HP base plate is used so there are plenty of vacuum ports for power brakes, PCV, etc.
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Holley – Holley 2 BBL Carbs, 0-4412S (Part No.0-4412S)
from
$549.99
The 0-4412 is designed as a stock replacement for 2BBL street applications as well as being mandated for some oval track racing sanctioning bodies. Whether you are looking for a replacement carburetor to replace your tired and worn factory 2BBL or one to push you to the finish line on Saturday night, the Holley 0-4412 Performance 2BBL is the perfect choice.
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Edelbrock – Edelbrock Performer 1413 Carburetor: 800 CFM, 4 Barrel, Square Bore, Electric Choke Inlet (Part No.1413)
from
$590.99
“The Edelbrock 1413 Performer Series 800 CFM electric choke carburetor is a precisely tuned, quality-built carburetor that can handle the rigors of daily driving while delivering consistent, reliable street performance from day to day. Several characteristics make the 1413 Performer Series 800 CFM electric choke carburetor an outstanding street performer. The first one is that metering rods are utilized to transition between circuits. The carburetor is unaffected by engine backfires, which means that there are no power valves to blow out, and the rods can be changed in seconds without carburetor removal or fuel draining. Secondly, the carburetor has the unique ability to “”hold a tune””, so once it is tuned, the carburetor stay’s tuned. What this means to you is that compared to other carburetors, the performance remains consistent and the calibration stays unchanged. The lightweight all-aluminum body features a two-piece body that resists warping and is compatible with gasohol and blended fuels. The simple tub-type bowls and rear-pivot floats all contribute to a carburetor that’s reliable, user-friendly and is easily tunable for miles and miles of trouble-free operation. Dyno tests proved that the EPS 800 carb outperformed a Holley #3310 carb out-of-the-box by 26 ft-lbs. of torque and 22 hp on a small-block Chevy engine equipped with an Edelbrock Performer RPM power package.”
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Holley – Holley Prem Street Carbs (Avengers), 0-81670 (Part No.0-81670)
from
$687.99
Square flange bolt pattern. Performance calibrated. The ultimate vacuum secondary street performance upgrade.
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Holley – Holley Street Carburetor: 600 CFM, Electric Choke, 4 Barrel, Square Bore, Dual Inlet, Shiny, 0-80458SA (Part No.0-80458SA)
from
$528.99
The Street HP uses the best features from Holley’s race Bred 4150 HP carbs, but tamed for street and light competition use. The contoured main body from the 4150 HP has a tumble polished shiny finish. The metering system includes a timed spark port for a vacuum advance distributor and is calibrated for a hot street and strip engine setup for outstanding throttle response and drivability. A street HP base plate is used so there are plenty of vacuum ports for power brakes, PCV, etc.
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Sniper Motorsports – Sniper Motorsports Sniper 2 Efi – Black, 550-511-5XR (Part No.550-511-5XR)
from
$2249.99
The 1 EFI conversion system just got better! Introducing Sniper 2 EFI – a self-tuning, easy-to-install, EFI conversion for common 4-barrel (4150 flange) style carburetors. We took everything that we learned from the original Sniper EFI system and added 14 new features that will make your EFI conversion more simple, reliable, and modern. Like all Sniper EFI systems, Sniper 2 is designed to work with the Sniper Ecosystem that includes Hyperspark ignition, complete fuel systems, multiple user interfaces/dash displays, and more.
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Sniper Motorsports – Sniper Motorsports Sniper Efi Super Sniper Stealth 1250 – Black, 550-877 (Part No.550-877)
from
$2249.99
If you’re looking to make some big power, the Super Sniper Stealth is made for you! Holley’s Sniper EFI Super Sniper Stealth 1250 is the best way to convert your carbureted engine to fuel injection with just 4 simple connections required. Super Sniper can support up to 1250HP boosted with 8 100 LB/HR Injectors. With a Stealth 1250 system, you get that carburetor styling but the functionality of a Sniper! This 4-barrel system features a single pattern bolt on design built to fit 4150 flange manifolds. The Super Sniper Stealth ECU is capable of fuel map self-learning and ignition timing control, improving idle stability, drivability, and wide-open throttle horsepower. Additionally, this Sniper kit also includes transmission kick down provisions for GM TH350/400, 200R4/700R4, and Ford C4/C6 applications!.
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Sniper Motorsports – Sniper Motorsports Sniper 2 Efi – Shiny, 550-510-5XR (Part No.550-510-5XR)
from
$2249.99
If you’re looking for a high-performance fuel injection system that delivers power, efficiency, and ease of use, look no further than the Sniper 2 EFI.
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Sniper Motorsports – Sniper Motorsports Sniper 2 Efi – Black, 550-511-3XR (Part No.550-511-3XR)
from
$2099.99
Make your classic drive like a modern fuel-injected vehicle, including easy cold starts, smooth drivability, and improved fuel economy! Sniper 2 is designed to be installed at home in your garage with limited tools and the support of Holley’s comprehensive installation manual and videos. The user-friendly setup wizard allows you to answer a few simple questions about your engine and the system will begin self-tuning with no laptop or tuning experience required.
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Sniper Motorsports – Sniper Motorsports Sniper 2 Efi – Shiny, 550-510-3XR (Part No.550-510-3XR)
from
$2099.99
If you’re looking for a high-performance fuel injection system that delivers power, efficiency, and ease of use, look no further than the Sniper 2 EFI.
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Sniper Motorsports – Sniper Motorsports Sniper 2 Efi – Shiny, 550-510-5XK (Part No.550-510-5XK)
from
$2049.99
If you’re looking for a high-performance fuel injection system that delivers power, efficiency, and ease of use, look no further than the Sniper 2 EFI.
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Sniper Motorsports – Sniper Motorsports Sniper 2 Efi – Black, 550-511-BXR (Part No.550-511-BXR)
from
$1999.99
Make your classic drive like a modern fuel-injected vehicle, including easy cold starts, smooth drivability, and improved fuel economy! Sniper 2 is designed to be installed at home in your garage with limited tools and the support of Holley’s comprehensive installation manual and videos. The user-friendly setup wizard allows you to answer a few simple questions about your engine and the system will begin self-tuning with no laptop or tuning experience required.
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Sniper Motorsports – Sniper Motorsports Sniper 2 Efi – Shiny, 550-510-BXR (Part No.550-510-BXR)
from
$1999.99
If you’re looking for a high-performance fuel injection system that delivers power, efficiency, and ease of use, look no further than the Sniper 2 EFI.
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Most Popular 1966 Mercury S-55 Performance Exhaust Products
Customize your Mercury with 1 Performance Exhaust Products products
like Performance Exhaust Manifold Gaskets, all
priced under $33.99.
FEL-PRO Performance – FEL-PRO Performance PERFORMANCE EXHAUST MANIFOLD GASKET SET, 1442 (Part No.1442)
from
$33.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions
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Top Picks for 1966 Mercury S-55 Performance Distributors
Upgrade Mercury S-55s with top-quality Performance Distributors parts, including 4 OEM and aftermarket selections for your 1966 model.
Holley EFI – Holley EFI EFI Accessories, 565-323 (Part No.565-323)
from
$584.99
HyperSpark distributors are plug and play with all Holley Sniper EFI systems, featuring a high quality billet distributor housing, Hall Effect crank trigger sensor, and they come included with the fool proof patented clear installation cap. All of our HyperSpark distributors are also available in a stylish black housing. We are also expanding our engine support to now include: Tall Deck Chevrolet and 250ci Chevrolet Inline 6 applications.
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Holley EFI – Holley EFI EFI Accessories, 565-323BK (Part No.565-323BK)
from
$584.99
HyperSpark distributors are plug and play with all Holley Sniper EFI systems, featuring a high quality billet distributor housing, Hall Effect crank trigger sensor, and they come included with the fool proof patented clear installation cap. All of our HyperSpark distributors are also available in a stylish black housing. We are also expanding our engine support to now include: Tall Deck Chevrolet and 250ci Chevrolet Inline 6 applications.
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Top Street Performance – Top Street Performance Ford FE Big Block Light Duty V8 (352-428) (330-391) Pro Series Ready to Run Distributor with Blue Cap, JM7708BL (Part No.JM7708BL)
from
$206.99
TSP Pro Series Ready to Run Distributor is perfect for a street performance upgrade. It features a CNC-machined billet aluminum body and hardened steel shaft, with a sealed ball bearing on top and a sintered steel bushing on the bottom. It also comes with a fully adjustable mechanical advance, vacuum advance, magnetic pickup trigger, and a high-output circuit board module with digital tach output. The dielectric cap comes with solid brass terminals and a color-matched wire retainer.
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Top Street Performance – Top Street Performance Ford FE Big Block Light Duty V8 (352-428) (330-391) HEI Distributor with Blue Cap, JM6508BL (Part No.JM6508BL)
from
$134.99
TSP HEI Distributor has everything you need, all under one cap. With a high-quality aluminum housing and hardened steel dual bushing construction, it is built to last. It features fully adjustable mechanical and vacuum advances, meaning precision is a breeze. It has a high-output module, high-spark 65,000 volt coil, solid brass terminals, and an easy one-wire hookup.
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In-Demand Performance Ignition Products for 1966 Mercury S-55s
Select from 13 premium Performance Ignition Products parts for your 1966 Mercury S-55, with prices ranging from $35.49 to $204.99.
Mallory – Mallory Unilite Ignition Module, 605 (Part No.605)
from
$99.99
Requires a 1.4 ohms Ballast resistor, Loom resistor or internally resisted coil.
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Accel – Accel Contact And Condenser Kit, 8203 (Part No.8203)
from
$92.79
Regain horsepower and economy for your street machine with new contact and condenser kit. Large tungsten contacts provide crisp coil firing and perform solidly up to 5,000 RPM. Condenser’s special winding protects from pitting of point contacts. Heavy duty 23 ounce points.
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Accel – Accel Ignition Coil – Yellow – 42000v 1.4 ohm primary – Points – up to 6500 RPM – The 8140 super stock ignition coil is a canister style coil that … (Part No.8140)
from
$49.99
Excellent high performance replacement for import and domestic vehicles with canister type oil filled coil. Re-engineered windings for even higher energy output resulting in quicker starting improved throttle response and more high RPM power. Designed to work with Points style and Breakerless electronic ignition systems. Heavy duty black Alkyd tower provides in flashover in protection to primary terminals. ACCEL Yellow can. 42000 volts effective up to 6500 RPM 1.4 ohms on the primary.
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Accel – Accel Spark Plug Wire Set – 8mm – Universal – Red Wire with Red Straight Boots – 5040R 8mm super stock universal fit spark plug wires feature a spi… (Part No.5040R)
from
$116.99
The traditional ACCEL combination of yellow wire and red spark plug boots has been added to these SuperStock Spiral Core 5000 Series wire sets, which feature color-matched wire and spark plug boots in blue, black, and red. With only 500 ohms/ft. of resistance, more ignition energy can reach the spark plug, producing a longer-lasting, hotter spark flame kernel. The results is higher performance through improved efficiency, quicker throttle response, and reduced emissions. This 8mm wire’s double silicone construction is rated to 550 degrees F. The high-gloss wire jacket resists moisture, chemicals, and heat extremes for longer life and great looks. The fiberglass braid adds greater pull strength and terminal retention, while the stainless steel spark plug terminals provide excellent long life, electrical conductivity, and corrosion resistance. Both universal and custom-fit applications are available for early and late model cars and trucks.
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Accel – Accel Ignition Coil – Chrome – 42000v 1.4 ohm primary – Points – up to 6500 RPM – 8140C superstock ignition coil is a chrome canister style high pe… (Part No.8140C)
from
$55.19
Excellent high performance replacement for import and domestic vehicles with canister type oil filled coil. Re-engineered windings for even higher energy output resulting in quicker starting improved throttle response and more high RPM power. Designed to work with Points style and Breakerless electronic ignition systems. Heavy duty black Alkyd tower provides in flashover in protection to primary terminals. ACCEL Yellow can. 42000 volts effective up to 6500 RPM 1.4 ohms on the primary.
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Accel – Accel Spark Plug Wire Set – 8mm – Universal – Black Wire with Black Straight Boots – 5040K, Spark Plug Wires, Super Stock, Spiral Core, 8mm, Black,… (Part No.5040K)
from
$103.99
The traditional ACCEL combination of yellow wire and red spark plug boots has been added to these SuperStock Spiral Core 5000 Series wire sets, which feature color-matched wire and spark plug boots in blue, black, and red. With only 500 ohms/ft. of resistance, more ignition energy can reach the spark plug, producing a longer-lasting, hotter spark flame kernel. The results is higher performance through improved efficiency, quicker throttle response, and reduced emissions. This 8mm wire’s double silicone construction is rated to 550 degrees F. The high-gloss wire jacket resists moisture, chemicals, and heat extremes for longer life and great looks. The fiberglass braid adds greater pull strength and terminal retention, while the stainless steel spark plug terminals provide excellent long life, electrical conductivity, and corrosion resistance. Both universal and custom-fit applications are available for early and late model cars and trucks.
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Accel – Accel Spark Plug Wire Set – 8mm – Yellow with Orange Straight Boots – 4040 8mm universal fit super stock spark plug wire sets feature a spiral core… (Part No.4040)
from
$69.99
ACCEL’s SuperStock 4000 series spark plug wire sets are designed to upgrade an OE ignition system for high-spark delivery levels for street driven applications. The 450 degree F rated silicone jacket is extruded over a tightly woven, rugged fiberglass braid. The braid is applied over high dielectric strength EPDM (Ethylene Propylene Diene Monomer) inner insulation for ignition wire performance that exceeds SAE specifications.
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PerTronix – PerTronix 808415 Flame-Thrower Spark Plug Wires 8 cyl 8mm Universal 115 Degree Red (Part No.808415)
from
$91.99
Most modern electronic ignition systems require suppression style wires to preserve sensitive components. Flame-Thrower 8mm Custom fit MAGx2 wires provide enhanced RFI suppression and dual current paths for more power delivered to the spark plug. Our custom wire sets have factory terminated ends for a superior connection and perfect fit, without cutting, crimping and splicing.
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Accel – Accel Points Eliminator Kit for Ford Motorcraft Points Distributors, 2020 (Part No.2020)
from
$117.99
Put and end to high maintenance point ignition systes by utilizing a specialized electronic circuitry and infrared signal. Stabalizes ignition timing from 1 to 10,000 RPM. Improves performance and fuel efficiency, easy to install with hand tools, reduces maintenance. It is built with the latest thermal clad based surface mount construction for maximum dependability and long life.
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Accel – Accel Ignition Coil – SuperStock – Breakerless Electronic Coil – Chrome – This chrome Super Coil is effective up to 6500 RPM, maximum voltage 45,00… (Part No.8145C)
from
$84.29
“Excellent high performance coil for vehicles that have been converted from points to a breakerless electronic distributor or electronic ignition system, where a canister type oil filled can coil is preferred. Designed with optimized low resistance, high turns ratio windings to work specifically with ACCEL 41, 51, 52, 61 & 71000 Series breakerless electronic replacement distributors. Engineered for higher energy output resulting in quicker starting, improved throttle response and more high RPM power. Special crimped and soldered internal connections ensure positive contacts. High performance tan Alkyd tower provides “”flashover”” protection to primary terminals. Available in “”ACCEL Yellow”” or Chrome Plated can.”
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Accel – Accel Spark Plug Wire Set – 8.8mm-300+ Ferro-Spiral Race – Universal- Vari-Angle Boots – 7040 300+ race wire universal spark plug wire sets have a … (Part No.7040)
from
$187.99
The oversized 8.8mm wire features a double silicone construction rated at over 600 F and 60kV. High gloss black silicone wire jacket not only looks great, but resists heat extremes, petrochemicals, ozone and moisture better than so-called blended materials for greater durability and longer life. High-density, high-temperature silicone insulation provides greater dielectric strength and eliminates arcing and the effects of corona better than typical OE style rubber materials. All-Kevlar stranded inner core and fiberglass braiding add greater pull strength and terminal retention. Stainless steel and brass terminals provide unsurpassed electrical conductivity and excellent corrosion resistance compared to terminals made of common or plated metals.
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Mallory – Mallory Distributor Wiring Harness, 29349 (Part No.29349)
from
$35.49
3-wire for ignition box. PERFORMANCE PARTS>PERFORMANCE IGNITION/STARTING/CHARGING>IGNITION>IGNITION ACCESSORIES & OTHER from Mallory
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Mallory – Mallory Promaster Classic Series Ignition Coil, 29440 (Part No.29440)
from
$204.99
The Mallory Promaster Classic series ignition coil is designed to meet today’s specialized ignition requirements. This coil features a faster rise time and increased spark duration (compared to stock) to increase performance. It has a glass-filled polyester case and oil-filled construction to ensure a long life and no energy loss from arcing. This coil also offers excellent wire retention with a spark plug type secondary post, and brass contact terminals.
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Most Sold 1966 Mercury S-55 Performance Engines
Explore our best-selling Mercury parts for the 1966 S-55 among 26 OEM and aftermarket options starting from $39.99.
Edelbrock – Edelbrock Performer 390 Intake Manifold for Ford FE, Satin Finish, 2105 (Part No.2105)
Edelbrock – Edelbrock Performer-Plus Camshaft Kit, 2106 (Part No.2106)
from
$392.99
“Edelbrock Performer-Plus Camshaft No: 2106 is designed for 352-428 Ford V8 engines and produce optimum torque from the low-end to the mid-range. Performer-Plus camshafts should be matched with Performer manifolds for vehicles operating from off-idle to 5500 rpm. The Performer-Plus No: 2106 is a smooth idling cam for daily drivers, trucks, vans, RVs and 4x4s. You can expect a major improvement in throttle response and torque. In the manifold section you’ll find torque graphs showing the power gains from Performer manifolds and Performer-Plus cams. All camshafts include flat tappet lifters (except for cams designed for use with stock roller lifters), assembly lube and instructions. This cam produced 410 Ft Lbs of Torque when paired with Performer 390 intake manifold No: 2105 and stock cylinder heads. Will not work in 427 side-oilers. Camshaft specifications: – Intake duration: 194 Degrees – Exhaust duration: 204 Degrees – Intake lift: .460″” – Exhaust lift: .480″” – Lobe separation: 110 Degree – Intake Center Line: 105 Degree – Vacuum: 16″””
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FEL-PRO Performance – FEL-PRO Performance Performance Cylinder Head Gasket, 1020 (Part No.1020)
from
$39.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions!
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Competition Cams – "Competition Cams SUPER VALVE LOCKS, 3/8"" 1 ST, 612-16" (Part No.612-16)
from
$43.99
Inside tang-to-taper relationship held tightly for repeatable valve spring installed heights
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FEL-PRO Performance – FEL-PRO Performance PERFORMANCE INTAKE MANIFOLD GASKET SET, 1246 (Part No.1246)
from
$39.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions
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B & M – B & M Holeshot 2400, 40412 (Part No.40412)
from
$899.99
This B&M Holeshot 2400 fits 1966-91 Ford C6 transmissions with 1.848-inch crank pilot and a 11.4-inch bolt circle. The Holeshot converters are an excellent choice for vehicles with engine modifications, particularly big cams that tend to reduce low end power and torque. The higher stall speed of this converter will launch the car in a higher rpm range where more torque is readily available, resulting in quicker acceleration. Holeshot converters feature furnace brazed impeller fins and turbine, new precision alloy impeller hub and new heavy duty needle bearings. Other features include fully balanced and pressure tested by expert technicians. If your vehicle is equipped with a plate type nitrous system or supercharger, please refer to the Nitrous Holeshot line of converters. Notes: Stall speed listings are based on engines producing 230lb. ft. of torque at 2,500 rpm. More torque at 2,500 rpm will give you more stall speed, less torque at 2,500 rpm will give you less stall speed than the stall speed ratings indicated. Higher stall converters can generate more heat, so we highly recommend adding a transmission cooler. This converter is Not recommended for supercharged, plate-type nitrous oxide or trans-brake applications. The product images shown are for illustration purposes only and may not be an exact representation of the product.
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B & M – B & M Torque Converter, Holeshot 2400, 40422 (Part No.40422)
from
$662.99
This B&M HoleShot 2400 fits 1971-91 Ford, Lincoln and Mercury C6 transmissions with a 1.375-inch crank pilot and has a 11.4-inch bolt circle. The Holeshot converters are an excellent choice for vehicles with engine modifications, particularly big cams that tend to reduce low end power and torque. The higher stall speed of this converter will launch the car in a higher rpm range where more torque is readily available, resulting in quicker acceleration. Holeshot converters feature furnace brazed impeller fins and turbine, new precision alloy impeller hub and new heavy duty needle bearings. Other features include fully balanced and pressure tested by expert technicians. If your vehicle is equipped with a plate type nitrous system or supercharger, please refer to the Nitrous Holeshot line of converters. Notes: Stall speed listings are based on engines producing 230lb. ft. of torque at 2,500 rpm. More torque at 2,500 rpm will give you more stall speed, less torque at 2,500 rpm will give you less stall speed than the stall speed ratings indicated. Higher stall converters can generate more heat, so we highly recommend adding a transmission cooler. This converter is Not recommended for supercharged, plate-type nitrous oxide or trans-brake applications. The product images shown are for illustration purposes only and may not be an exact representation of the product. Note: For Small block engines only.
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Competition Cams – Competition Cams High Energy 206/206 Hydraulic Flat Cam K-Kit, K33-221-3 (Part No.K33-221-3)
from
$592.99
Ideal for use with mainly stock components like rocker arms, intake manifolds, cylinder heads, compression ratio, torque converters and rear gear ratios, the High Energy camshaft grind family is a great choice for street performance applications.
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Competition Cams – Competition Cams Magnum 224/224 Hydraulic Flat Cam and Lifter Kit, CL33-226-4 (Part No.CL33-226-4)
from
$451.99
An older member of the COMP Cams grind family, the Magnum series of camshafts offers excellent performance gains over stock without the added wear and tear associated with more aggressive camshafts.
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Edelbrock – Edelbrock Water Pump Ford FE 352-428 1965-76 in Satin Finish, 8805 (Part No.8805)
from
$400.99
Maximum cooling for street and racing engines. Internal passages are balanced for maximum flow. Impeller is larger than others for maximum pressure. Impeller vanes dramatically increase flow rates. Equal distribution to both sides of block. Only flows in one direction for optimum efficiency. In the early days of the automotive performance industry, you either ran what was available, or you fabricated something you thought met your needs. Such needs were the building blocks of this industry, and it was through the efforts of many that we have the automotive aftermarket, but it was through the work of one name in particular to which many in the industry owe a great debt, and that name is Edelbrock.
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Competition Cams – Competition Cams Xtreme Energy 212/218 Hydraulic Flat Cam and Lifter Kit, CL33-234-4 (Part No.CL33-234-4)
from
$397.99
Featuring a quicker valve opening, the Xtreme Energy camshaft profile provides increased responsiveness and more area under the lift curve than older, slower grinds. Designed to increase performance without sacrificing driveability and creature comforts.
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Competition Cams – Competition Cams High Energy 218/218 Hydraulic Flat Cam and Lifter Kit, CL33-224-3 (Part No.CL33-224-3)
from
$386.99
FE FORD HYDRAULIC CAM AND LIFTER KIT – High Energy: Good upgrade for factory performance cams in 390-428. Noticeable idle.
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Competition Cams – Competition Cams Big Mutha’ Thumpr 242/257 Hydraulic Flat Cam, 33-602-5 (Part No.33-602-5)
from
$325.99
Designed to deliver an aggressive, hard-hitting exhaust note at idle, the Thumpr camshaft series from COMP Cams also delivers excellent horsepower gains and a broad torque curve. A perfect choice for muscle cars and street rods.
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Competition Cams – Competition Cams Magnum 2230/230 Hydraulic Flat Cam, 33-230-4 (Part No.33-230-4)
from
$309.99
An older member of the COMP Cams grind family, the Magnum series of camshafts offers excellent performance gains over stock without the added wear and tear associated with more aggressive camshafts.
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Competition Cams – Competition Cams Xtreme Energy 230/236 Hydraulic Flat Cam, 33-248-4 (Part No.33-248-4)
from
$309.99
Featuring a quicker valve opening, the Xtreme Energy camshaft profile provides increased responsiveness and more area under the lift curve than older, slower grinds. Designed to increase performance without sacrificing driveability and creature comforts,
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Competition Cams – Competition Cams Magnum 244/244 Hydraulic Flat Cam, 33-240-4 (Part No.33-240-4)
from
$309.99
An older member of the COMP Cams grind family, the Magnum series of camshafts offers excellent performance gains over stock without the added wear and tear associated with more aggressive camshafts.
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Competition Cams – Competition Cams Magnum 224/224 Hydraulic Flat Cam, 33-226-4 (Part No.33-226-4)
from
$309.99
An older member of the COMP Cams grind family, the Magnum series of camshafts offers excellent performance gains over stock without the added wear and tear associated with more aggressive camshafts.
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Competition Cams – Competition Cams Xtreme Energy 212/218 Hydraulic Flat Cam, 33-234-4 (Part No.33-234-4)
from
$309.99
Featuring a quicker valve opening, the Xtreme Energy camshaft profile provides increased responsiveness and more area under the lift curve than older, slower grinds. Designed to increase performance without sacrificing driveability and creature comforts,
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Competition Cams – Competition Cams Magnum 253/253 Hydraulic Flat Cam, 33-241-4 (Part No.33-241-4)
from
$309.99
An older member of the COMP Cams grind family, the Magnum series of camshafts offers excellent performance gains over stock without the added wear and tear associated with more aggressive camshafts.
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Competition Cams – Competition Cams High Energy 218/218 Hydraulic Flat Cam, 33-224-3 (Part No.33-224-3)
from
$297.99
HYDRAULIC – High Energy: Good upgrade for factory performance cams in 390-428. Noticeable idle.
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Competition Cams – Competition Cams High Energy 212/212 Hydraulic Flat Cam, 33-222-3 (Part No.33-222-3)
from
$297.99
Ideal for use with mainly stock components like rocker arms, intake manifolds, cylinder heads, compression ratio, torque converters and rear gear ratios, the High Energy camshaft grind family is a great choice for street performance applications.
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Edelbrock – Edelbrock Engine Gasket Set, 7368 (Part No.7368)
from
$162.99
The Edelbrock No: 7368 head gaskets provide the best sealing solution and are matched to Edelbrock cylinder heads for optimal performance. Edelbrock relies on industry leading head gasket manufactures to ensure our head gasket sets will provide the best fit and sealing properties when used with Edelbrock aluminum cylinder heads. Edelbrock head gaskets are manufactured from high-density materials and feature a superior design that performs under pressure and provides a long-lasting seal, without re-torqueing.
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Edelbrock – Edelbrock Sure Seat Valve Springs, 5792 (Part No.5792)
from
$157.99
The Edelbrock No: 5792 Sure Seat Valve Spring for Chrysler 383-400-413-440 V8 1969-79 O.E Cast iron cylinder heads are made of highest quality spring wire and precision wound to close tolerances, our Sure Seat Valve Spring sets are for use on original equipment heads when installing Edelbrock Performer-Plus, Performer RPM and Torker-Plus camshafts. These are the same high-performance springs used on Edelbrock Performer and RPM cylinder heads. For camshaft warranty compliance, use only the springs recommended by Edelbrock for each camshaft application.
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Mr. Gasket – Mr. Gasket Performance Valve Cover Gaskets, 275 (Part No.275)
from
$51.99
Mr. Gasket Performance Valve Cover Gaskets are high-density cork/rubber blend gaskets that use evenly sized cork particles distributed evenly throughout the rubber binder. The result is a compressible valve cover gasket without leak paths. These gaskets create a positive seal by controlled swelling of the gasket material when exposed to hot engine oil. Provides excellent flange sealing and durability. For original equipment replacement, high performance street, drag race and oval track use.
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Top-Rated Performance and Racing Products Brands For Your 1966 Mercury S-55
Shop for the best-rated brands offering Performance and Racing Products and other products for your 1966 Mercury S-55s. Below you’ll find some of our best rated Performance and Racing Products from Edelbrock, B & M, and Holley, and more. Performance and Racing Products from these brands that fit a 1966 S-55 start at just $299.99 and are rated as high as 4.4 stars. OEM and aftermarket Performance and Racing Products don’t get more top quality, durable, and affordable than from the brands below.
Popular Edelbrock 1966 Mercury S-55 Performance and Racing Products
When it comes to maintaining or upgrading your 1966 Mercury S-55, using quality Performance and Racing Products is essential to ensure durability and a perfect fit. Edelbrock ticks all of those boxes. We offer a wide selection of Edelbrock Performance and Racing Products, specifically designed for the 1966 Mercury S-55. With over 3 Edelbrock brand Performance and Racing Products in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $450.99, with an average price of just $480.32. Plus, with over 68 customer reviews and an average rating of 4.4 stars, you can trust that our Edelbrock Performance and Racing Products will get the job done right. Choose Advance Auto Parts for reliability, quality, and expert-approved parts that keep your vehicle running strong.
from
$519.99
(3)
Edelbrock Performer 1411 Carburetor: 750 CFM, 4 Barrel, Square Bore, Electric Choke Inlet
“i put this carb on my dump truck and i couldn’t be more pleased. my truck runs great and has better mpg and increased power”
from
$469.99
(10)
Edelbrock AVS2 1906 Carburetor: 650 CFM, 4 Barrel, Square Bore, Electric Choke Inlet
“Dropped on an 84 Chevy k20. Runs like a top.”
from
$450.99
(55)
Edelbrock Performer 1406 Carburetor: 600 CFM, 4 Barrel, Square Bore, Electric Choke Inlet
“I love the product, great performance and a awesome chrome look!”
Popular B & M 1966 Mercury S-55 Performance and Racing Products
B & M auto parts is one of the highest quality Performance and Racing Product brands in the market. Any 1966 Mercury S-55 owner should feel confident when installing genuine B & M parts in their vehicle. To ensure the best fit and performance for your 1966 S-55, Advance Auto Parts carries a full inventory of 3 B & M Performance and Racing Products. Plus you will be keeping your Mercury in peak condition while saving money because prices on these B & M Performance and Racing Products range from $299.99 to $549.99, plus, with more than 15 customer reviews and an impressive 4.3 stars average rating, you can be confident the Fram Performance and Racing Products below will deliver on both quality and value.
from
$299.99
(11)
B & M Automatic Shifter – Z-Gate – Universal, 80681
“Husband has been redoing his ford truck and I over heard him say he needed a shifter I went and bought him this shifter and he loves it very easy to p”
from
$549.99
(1)
B & M Automatic Shifter – Megashifter – Universal, 80690
“its was pretty easy to install if u have any type of knowlegde of cars it should not be difficult at all and the shifting is awesome just be careful w”
from
$299.99
(3)
B & M Automatic Shifter – Unimatic – Universal, 80775
“Super easy to install, works nice.”
FAQs for 1966 Mercury S-55 Performance and Racing Products
Which Performance and Racing Products are best-sellers for 1966 Mercury S-55s?
Out of 125 Performance and Racing Products that fit 1966 Mercury S-55s, the following parts are the top sellers:
- Edelbrock AVS2 1906 Carburetor: 650 CFM, 4 Barrel, Square Bore, Electric Choke Inlet (11920262) – $469.99
- Edelbrock Performer 1406 Carburetor: 600 CFM, 4 Barrel, Square Bore, Electric Choke Inlet (5020646) – $450.99
- Holley Street Carburetor: 600 CFM, Electric Choke, 4 Barrel, Square Bore, Single Inlet, Shiny, 0-80457S (6340008) – $499.99
What’s the price range for 1966 Mercury S-55 Performance and Racing Products?
Performance and Racing Product prices for the 1966 Mercury S-55 start at $33.99 and go up to $2,249.99 for the most premium parts.
What’s the average price of a Performance and Racing Product for a 1966 Mercury S-55?
The average price for Performance and Racing Products for the 1966 Mercury S-55 is $756.27. Keep in mind the variety of part types within our Performance and Racing Product category so you are likely to find a wide range of prices across a variety of parts and components.
What are the cheapest Performance and Racing Products for my 1966 Mercury S-55?
The cheapest 1966 Mercury S-55 Performance and Racing Products we carry in stock are:
- FEL-PRO Performance PERFORMANCE EXHAUST MANIFOLD GASKET SET, 1442 (19781781) – $33.99
- Mallory Distributor Wiring Harness, 29349 (17350080) – $35.49
- FEL-PRO Performance PERFORMANCE INTAKE MANIFOLD GASKET SET, 1246 (19781813) – $39.99
- FEL-PRO Performance Performance Cylinder Head Gasket, 1020 (19782349) – $39.99
- "Competition Cams SUPER VALVE LOCKS, 3/8"" 1 ST, 612-16" (10203685) – $43.99
What are the top-rated Performance and Racing Products that fit the 1966 Mercury S-55?
Out of 1,015 reviews by customers, our 1966 Mercury S-55 Performance and Racing Products have an average customer rating of . These are some of the highest-rated Performance and Racing Product types for the 1966 Mercury S-55 and their top-rated products:
- Performance Shifters
- B & M Automatic Shifter – Megashifter – Universal, 80690 (6900895) – $549.99
- B & M Automatic Shifter – Unimatic – Universal, 80775 (6121233) – $299.99
- B & M Automatic Shifter – Z-Gate – Universal, 80681 (6900216) – $299.99
What types of Performance and Racing Products do you sell for my 1966 Mercury S-55?
As of 8/2/26, these are some of the most in-demand types of Performance and Racing Products for a 1966 Mercury S-55:
Can I get help with 1966 Mercury S-55 Performance and Racing Product orders?
Contact our customer support team, by chat or phone, through the help desk page, where you can find instant answers about Mercury Performance and Racing Products and more.
What is your return policy for Mercury S-55 Performance and Racing Products?
Advance Auto Parts keeps returns simple. For new Mercury S-55 Performance and Racing Products and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.
