1966 Mercury S-55 Performance Engines

Essential 1966 Mercury S-55 Performance Engines

FEL-PRO Performance – Lower Intake Manifold Gasket Set: 5 Piece Set (Part No.1246)

Lower Intake Manifold Gasket Set: 5 Piece Set

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$39.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • Fel-Pro performance intake manifold gaskets have been tested with virtually all aftermarket cylinder head and intake manifold combinations.
  • Performance intake manifold gaskets designed without a metal core, to allow engine builders to trim the gasket for exact fit on modified ports.
  • Standard and Low riser
  • Printoseal elastomeric sealing beads to provide extra sealing strength around the intake port.
  • Not intended for use in emission controlled vehicles.
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Mr. Gasket – Intake Gasket (Part No.201G)

Intake Gasket

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$35.99
Mr. Gasket Performance Intake Gaskets are manufactured from cellulose/nitrile composition gasket material. They provide excellent sealing and durability. Can be trimmed if necessary for modified port applications. Complete with manifold end seals and distributor gasket (where applicable). For original equipment replacement, high performance street, drag race and oval track.

Product Features:
  • Manufactured from cellulose/nitrile composition gasket material
  • Provides excellent sealing and durability
  • Can be trimmed if necessary for modified port applications
  • Complete with manifold end seals and distributor gasket where applicable
  • For OE replacement, high performance street, drag race and oval track use
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Edelbrock – Performer-Link Adjustable True-Roller Timing Chain Set (Part No.7808)

Performer-Link Adjustable True-Roller Timing Chain Set

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$80.99


Product Features:
  • Solid Bushing Chain Resists Stretching
  • For Use with Stock or Edelbrock Camshafts
  • Stressproof Steel Crank Gears
  • 3 Keyway Setting Points To Ensure Accurate Timing
  • True Bearing Surface Rolls with the Sprockets
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Competition Cams – VALVE SEALS, TEFLON 3/8" 1 ST (Part No.505-16)

VALVE SEALS, TEFLON 3/8" 1 ST

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$31.99
COMP Cams offers a complete line of valve stem seals, from the umbrella seals to the positive-stop Teflon seal. These seals are a must to keep unwanted oil from entering the combustion chamber through the clearance in the valve guides. The umbrella seal is normally used when a larger-than-stock diameter spring is used, in the case of a double spring, the positive-stop Teflon seal is used. The umbrella seals require no machining, but with the Teflon seal it is necessary to disassemble the heads and machine the top of the guide with a special .530 diameter cutter. Whenever you are planning an engine overhaul or a cam change, don’t forget the valve seals.

Product Features:
  • Work with .530″ guides and 3/8″ valve stem diameter
  • Valve stem oil seals keep unwanted oil from entering the combustion chamber
  • Several different types of valve seals are offered
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Competition Cams – VALVE SPRINGS, 1.509" DUAL 1 ST (Part No.924-16)

VALVE SPRINGS, 1.509" DUAL 1 ST

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$788.99
Dual Valve Springs from COMP Cams are manufactured from Super Clean wire and subject to extensive quality control testing to deliver a valve spring assembly with superior strength, durability and valve train stability, no matter what the application. The dual spring design creates a stronger valve spring that can easily handle the increased lift found in extreme stress applications. COMP Cams Dual Valve Springs exceed the expectations of today’s engine builders and racers.

Product Features:
  • Seat pressure: 112 lbs. @ 1.900″, Open Pressure: 355 lbs. @ 1.200″
  • O.D.: 1.509″, I.D.: 0.697″
  • Dual valve springs with damper
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Mr. Gasket – Valve Cover Gasket (Part No.275)

Valve Cover Gasket

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$42.49
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.

Product Features:
  • Manufactured from high-density cork/rubber blend gasket material
  • Provides excellent sealing and durability
  • For OE replacement, high performance street, drag race and oval track use
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Spectre – Water Neck; Ford 390-428 (Part No.4736)

Water Neck; Ford 390-428

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$47.99
Spectre’s Ford water neck fits Ford 390, 427 and 428 engines. This water neck has been designed around the OEM specifications and has a chrome plated finish for a lasting look that fits great. This water neck includes bolts.

Product Features:
  • Fits Ford 390, 427 and 428 engines
  • Includes bolts and gasket
  • Chrome plated
  • Easy to install
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Edelbrock – Performer 390 Intake Manifold for Ford FE, Polished Finish (Part No.21051)

Performer 390 Intake Manifold for Ford FE, Polished Finish

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$875.99
Product Features:
  • For Idle to 5500 RPM Street-Driven Performance
  • Dual-Plane Low-Rise Intake w/180 deg. Firing Order
  • Patented Runner Design Ensures Broad Torque Curve
  • Excellent Throttle Response and Mid-Range Power
  • 50-State Street Legal if Correct Carburetor Used
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Edelbrock – Water Pump Ford FE 352-428 1965-76 in Satin Finish (Part No.8805)

Water Pump Ford FE 352-428 1965-76 in Satin Finish

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$381.99
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.

Product Features:
  • Maximum Cooling for Street and Racing Engines
  • Internal Passages Are Balanced for Maximum Flow
  • Impeller is Larger than Others For Max Pressure
  • Impeller Vanes Dramatically Increase Flow Rates
  • Equal Distribution to Both Sides of Block
  • Only Flows in One-Direction for Optimum Efficiency
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FEL-PRO Performance – Cylinder Head Gasket: Steel Core Composite, Without Head Bolts (Part No.1020)

Cylinder Head Gasket: Steel Core Composite, Without Head Bolts

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$41.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • Fel-Pro Performance head gaskets accommodate the high cylinder pressures and cylinder head movement associated with performance engines.
  • Inserted within a stainless steel armor surrounding each cylinder, wire ring design provides highly concentrated sealing around the combustion chamber.
  • Raises combustion sealing force to roughly three times that of standard head gaskets.
  • Steel wire rings for the greatest combustion seal strength.
  • Not intended for use in emission controlled vehicles.
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FEL-PRO Performance – PERFORMANCE OIL PAN GASKET SET (Part No.1817)

PERFORMANCE OIL PAN GASKET SET

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$27.49
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • Felcoid/Plus gaskets have a fiber sheet core and a latex rubber coating to eliminate potential leakage paths. The core material resists crushing and splitting, while providing excellent blowout resistance.
  • With steel core to provide ultimate excellent blowout resistance.
  • Not intended for use in emission controlled vehicles.
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Mr. Gasket – Oil Pan Gasket (Part No.290)

Oil Pan Gasket

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$35.99
Mr. Gasket Performance Oil Pan Gaskets are manufactured from a high-density cork /rubber blend gasket material to provide excellent sealing and durability. For original equipment replacement and high performance street use.

Product Features:
  • Manufactured from high-density cork /rubber blend gasket material
  • Provides excellent sealing and durability
  • For OE replacement and high performance street use
  • Prevents Torque Loss
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1966 Mercury S-55 Performance Engines

Maybe you’re in the middle of a full rebuild of that 1966 Mercury S-55. Maybe you just need a couple of Performance Engines. Either way, Advance Auto Parts has 12 different Performance Engines in our inventory ranging from $27.49 to $875.99. That means you can find the exact parts or products you need to keep that 1966 Mercury S-55 running smoothly.

Performance Engines are only as good as their brand. We stock 5 different brands to make sure you have plenty of trusted parts to choose from for your 1966 Mercury S-55. FEL-PRO Performance, Edelbrock, and Competition Cams are just some of the brands we stock. Search for brands you know or compare prices and reviews to help you decide!

We know you’ll find the perfect Performance Engines for your 1966 Mercury S-55, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 10 reviews in this category, some of the top rated parts include Water Neck; Ford 390-428 with 4.0 stars and Cylinder Head Gasket: Steel Core Composite, Without Head Bolts with 1.0 stars.

So if you’re in the market for aftermarket Performance Engines to keep your 1966 Mercury S-55 rolling for years to come, look no further. Shop online and have your products shipped direct to your door, or pick up at the nearest Advance Auto Parts location today!

Performance Engines Brands To Make Your 1966 Mercury S-55 Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1966 Mercury S-55 demands trusted brand parts and products to keep it running. Many trusted brands of Performance Engines make up Advance Auto Parts’ inventory, and all are ready to help make your S-55 the best it can be. Be sure to browse some of our top Performance Engines brands and parts.

Popular Competition Cams Performance Engines

We carry Competition Cams parts in our stock across Performance Engine Valve Stem Seal Sets categories, plus more. For a 1966 Mercury S-55, our most popular Competition Cams Performance Engines include:
VALVE SEALS, TEFLON 3/8" 1 ST
from $31.99
(1)
VALVE SEALS, TEFLON 3/8" 1 ST
Performance Engine Valve Stem Seal Sets

FAQs for 1966 Mercury S-55 Performance Engines

What are the most purchased Performance Engines for the 1966 Mercury S-55?

Out of 12 Performance Engines for the 1966 Mercury S-55, the most popular in our inventory are:
PERFORMANCE OIL PAN GASKET SET
from $27.49
This product is not rated
PERFORMANCE OIL PAN GASKET SET
Performance Engine Oil Pan Gaskets
Performer-Link Adjustable True-Roller Timing Chain Set
from $80.99
This product is not rated
Performer-Link Adjustable True-Roller Timing Chain Set
Performance Engine Timing Sets and Components
Lower Intake Manifold Gasket Set: 5 Piece Set
from $39.99
This product is not rated
Lower Intake Manifold Gasket Set: 5 Piece Set
Performance Engine Intake Manifold Gaskets

What are the top-rated 1966 Mercury S-55 Performance Engines?

Top-rated Performance Engines for your 1966 Mercury S-55 based on customer reviews/ratings are:
Water Neck; Ford 390-428
from $47.99
(1)
Water Neck; Ford 390-428
“Excellent web site, delivery, and follow up.”
Cylinder Head Gasket: Steel Core Composite, Without Head Bolts
from $41.99
(1)
Cylinder Head Gasket: Steel Core Composite, Without Head Bolts
“Had to call and talk to 3 operators 3 separate times to get this straightened out .On item description should say 1 gasket requires 2.”