1966 Pontiac LeMans Performance Engines

Name: Advance And Retard Cam Bushings
Brand: Mr. Gasket
SKU: 85
Price: 48.99 USD

Keep Your 1966 Pontiac LeMans in Top Shape with Quality Performance Engines

Whether you’re repairing or upgrading your Performance Engine, using high-quality parts is key to keeping your 1966 Pontiac LeMans looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Performance Engine Valve Cover Gasket Sets, Performance Engine Oil Pan Gaskets, and Performance Engine Intake Manifold Gaskets. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Top-Rated Performance Engines from Trusted Brands

Looking for a reliable Performance Engine? We’ve got you covered with options from brands you know and trust like Competition Cams. For example, Competition Cams Performance Engines start at just $223.99 with an average 4.1 star rating. With over 33 reviews and a solid 4 star average, you can shop with confidence knowing other Pontiac LeMans owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1966 Pontiac LeMans Performance Engine at Advance Auto Parts is around $274.57, with a range that starts at $10.99 and goes up to $899.99. With 84 options in stock from 5 trusted brands, finding the right fit is easy. Popular picks like High Performance Thermostat, Lower Intake Manifold Gasket Set: 12 Piece Set, and Intake Gasket start at just $31.99 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Performance Engine, don’t forget to check out other key components like Performance Distributors and Performance Fuel Systems. At Advance Auto Parts, we’re here to help you keep your 1966 Pontiac LeMans in peak condition, inside and out.

Looking for the perfect Performance Engine for your 1966 Pontiac LeMans? You’re in the right place. Below, you’ll find links to various types of Performance Engines that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Performance Engines, ensuring durability and a precise fit for your Pontiac LeMans. Whether you’re driving a 1966 model or another popular model year like 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, and 1981, we’ve got you covered. Purchasing Performance Engines from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Performance Engines that fit your vehicle.

Essential 1966 Pontiac LeMans Performance Engines

from

$48.99

With Mr. Gasket cam degree bushings you fine tune the camshaft timing of your engine to as little as 1 degree. Even aftermarket timing sets with multiple keyways can’t give the range of adjustment these bushings allow. Retard your camshaft to lower the powerband for more low end torque and midrange horsepower, or advance for more top end power. This kit does even number adjustment 0-8 degrees.

Product Features:

Advance the cam for increased torque and horsepower
Tune your powerband for more end torque or increase top end horsepower
Includes (4) offset bushings and (1) 0 degree bushing
Cam sprocket dowel pin hole must be drilled to .406¿ (13/32¿) dia.
Cam sprocket dowel pin hole must be drilled to .406┐ (13/32┐) dia.
Increase Top-End Horsepower

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$223.99

VALVE SEALS, O-RING 11/32″ 1 ST

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$27.99

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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$41.99

Manufactured from cellulose/nitrile composition gasket material. A black latex rubber coating is applied to outside of gasket to help seal minor oil pan rail irregularities and eliminate the possibility of oil leakage. Provides excellent sealing and durability. Complete with molded rubber front/rear oil pan seals where applicable. For original equipment replacement, high performance street, drag race and oval track.

Product Features:

Manufactured from cellulose/nitrile rubber composition gasket material
Provides excellent sealing and durability
Complete with molded rubber front/rear oil pan end seals where applicable
For OE replacement, high performance street, drag race and oval track use
Graphite Non-Wicking Rubber
No Cork Particles
Easy Removal For Disassembly

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$100.99

Valve spring retainers for use OE cast iron heads. Superior quality heat-treated steel. Machined for strength with black oxide finish. Finish ensures rust and corrosion protection.

Product Features:

Valve Spring Retainers for Use OE Cast Iron Heads
Superior Quality Heat-Treated Steel
Machined for Strength with Black Oxide Finish
Finish Ensures Rust and Corrosion Protection

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$106.99

Product Features:

Use W/ Valve Springs Part #5822, 5882, 5896, 5872, 5867, 5812, 5857
Set of 16
1.50 in. Outside Diameter
Steel Material
Black Oxide Finish

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$199.99

Product Features:

Case-Hardened Tubing
Welded Ends
5/16 in. Diameter
Use with or without Hardened Steel Guideplates

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$165.99

Magnum Pushrods from COMP Cams offer an affordable solution for your .080″ wall chromemoly pushrod needs. Designed to withstand the stresses of a high performance engine, Magnum Pushrods are head-treated for extended durability and have precision formed, reinforced ends. Magnum Pushrods are black-oxide finished with their part number and length laser etched onto the surface for easy identification.

Product Features:

3/8″ Diameter, 7.800″ Length
Magnum Pushrods for Small Block Chevy
One-piece .080″ wall chromemoly steel tubing
Heat-treated for extended durability and guide plate compatibility
Precision formed and reinforced pushrod end

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$29.99

Mr. Gasket High Performance Thermostats are designed to resist large variations of coolant pressure at high RPM (revolutions per minute). This allows them to fully open at correct temperature consistently regardless of engine RPM. The design also provides the high flow that engines operated a higher RPM need. This thermostat also features a copper/brass construction to further resist corrosion. Mr. Gasket High Performance / High Flow Thermostats are suitable for street, drag race, or oval track applications.

Product Features:

Opens At 180 Degrees
Designed to Resist Large Variations of Coolant Pressure at High RPM
Fully Opens at Correct Temperature Consistently Regardless of Engine RPM
For High Performance Street, Drag Race, and Oval Track
Copper & Brass Construction – Resists Corrosion
High Flow

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$29.49

Opens at 160 Degrees
Designed to Resist Large Variations of Coolant Pressure at High RPM
Fully opens at Correct Temperature Consistently Regardless of engine RPM
For High Performance Street, Drag Race, and Oval Track
Copper & Brass Construction – Resists Corrosion
High Flow

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$155.99

Complete kit includes retainers and locks. Springs made of highest quality spring wire. Springs precision wound to close tolerances. Includes superior quality steel retainers. Includes 7 degree heat-treated valve stem locks. Retainers and locks are black oxide coated. Non-rotator style: Dyno tested and street proven. Great match to Edelbrock camshaft kit.

Product Features:

Complete Kit: Includes Retainers And Locks
Springs Made of Highest Quality Spring Wire
Springs Precision Wound To Close Tolerances
Includes Superior Quality Steel Retainers
Includes 7 deg. Heat-Treated Valve Stem Locks
Retainers and Locks Black Oxide Coated
Dyno Tested And Street Proven
Great Match to Edelbrock Camshaft Kit

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$159.99

Complete Kit: Includes Retainers And Locks
Springs Made of Highest Quality Spring Wire
Springs Precision Wound To Close Tolerances
Includes Superior Quality Steel Retainers
Includes 7 deg. Heat-Treated Valve Stem Locks
Retainers and Locks Black Oxide Coated
Non-Rotator Style: Dyno Tested and Street Proven
Great Match to Edelbrock Camshaft Kit

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$27.99

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.

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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$34.99

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

Product Features:

Blue Stripe performance cork-rubber gaskets use cork particles evenly distributed throughout a rubber binder resulting in a compressible gasket without leak paths.
Not intended for use in emission controlled vehicles.

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$28.99

Product Features:

Clean Positive Seal
Embossed Silicone Bead Surrounding The Port
Matched To Manifolds And Cylinder Heads

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$48.99

Mr. Gasket Performance Intake Gaskets are manufactured from cellulose/nitrile composition gasket material. This is a low density material that conforms well to irregular surfaces and has very good crush resistance at high flange pressures. They provide excellent sealing and durability as the material is designed for sealing gasoline, oils, water and coolant in applications up to 350 degrees Fahrenheit. While die-cut for an excellent fit, they can be trimmed if necessary for modified port applications. 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
Die-cut for an excellent fit
Can be trimmed if necessary for modified port applications
For OE replacement, high performance street, drag race and oval track use

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$1201.99

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.

Product Features:

Good blend of efficiency and performance.
Perfect choice for performance street rebuilds.
Work well with mainly stock components such as rockers, manifolds, heads, compression, torque converters and gears.

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$668.99

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.

Product Features:

Excellent performance in street carbureted applications.
More vacuum allows an increase in duration for improved performance and assists power brakes.
Quicker opening lobe profiles deliver increased responsiveness and more area under the lift curve.
Best performance with aftermarket intake manifolds, headers, lower gear ratios etc.

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$749.99

Nitrous Holeshot Converters are Built with the same features as the other B&M Holeshots, with the addition of anti-balloon plates. The anti-balloon plates will allow these converters to stand up to the instant horsepower nitrous delivers.

Product Features:

3400-3800 RPM
Small And Big Blocks
Serious Performance
Furnace Brazed
Fully Balanced

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$549.99

HoleShot 2400 for GM 1965 to 1991 TH400, 425, 375 and 1968 to 1981 TH350, 375B (not 350C) Application: HoleShot 2400 for GM 1965 to 1991 TH400, 425, 375 and 1968 to 1981 TH350, 375B (not 350C) A higher than stock stall speed as delivered by the Holeshot c

Product Features:

Furnace Brazed Impeller
Steel Alloy Pump Drive Tube
Heavy Duty Needle Bearing
Between Stator and Turbine
Furnace Brazed Turbine

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$433.99

These COMP Cams Ultra-Gold Aluminum Roller Rocker Arms with a 3/8″ stud diameter and 1.6 ratio are designed for Chevrolet V8 265-400 applications. The new modern design features of these Ultra-Gold Rockers are proven to withstand extremely aggressive spring pressure and valve lift. Designed specifically for high performance street and race engines, the Ultra-Gold Aluminum Rocker Arms are precision CNC-machined to strict tolerances. Developed to meet the demands of professional engine builders, these rockers include features never before possible in an aluminum rocker arm.

Product Features:

CNC-machined, lightweight design removes weight and yields unrivaled quality and ratio accuracy
Designed for high performance street and race engines
Precision-sorted trunion bearings withstand elevated valve spring pressure and valve lift
Additional clearance, up to 1.650″ O.D. valve spring

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$75.99

Mr. Gasket screw-in rocker arm studs are manufactured from heat treated black oxide coated Grade 8 steel. Ideal for high performance street applications. OE style press in rocker studs can actually pull out of the cylinder head when using high lift camshafts. Includes sixteen studs 3/8-24 x 1.47 inch long top x 7/16-14 bottom.

Product Features:

Black Oxide Coated Grade 8 Steel
Kit Contains 16 Studs
Easy To Install
Heat Treated Steel
Grade 8 Steel

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$297.99

Excellent performance in street carbureted applications.
More vacuum allows an increase in duration for improved performance and assists power brakes.
Quicker opening lobe profiles deliver increased responsiveness and more area under the lift curve.
Best performance with aftermarket intake manifolds, headers, lower gear ratios etc.

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$298.99

HYDRAULIC – Xtreme Energy: Good for street machines, slightly rough idle. 2000+ stall.

Product Features:

HYDRAULIC – Xtreme Energy: Good for street machines, slightly rough idle. 2000+ stall.
268/280 Advertised Duration, 224/230 Duration @ .050″, .477″/.480″ Lift, 110 Lobe Separation
Valve spring upgrade required

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$298.99

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.

Product Features:

Best with aftermarket torque converters and 9.5:1 compression.
Great high RPM power.
Easy on valve train parts.
Can be used with mild ratio rocker arms and traditional performance valve springs.

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$281.99

2500-6500 RPM high-performance street engines. Single-plane low-rise intake good for high RPM. Ideal for applications with limited hood clearance. For top-end HP and adequate throttle response. Not for mileage or emissions applications. For trucks or vans use PN(2701) instead. Not for LT1 or Chevy bowtie heads. Not for 1987 and later stock aluminum heads. Available in cast or polished.

Product Features:

2500 to 6500 RPM High Performance Street Engines
Single-Plane Low-Rise Intake Good for High RPM
Ideal for Applications with Limited Hood Clearance
For Top-End HP and Adequate Throttle Response
Not for Mileage or Emissions Applications
For Trucks or Vans Use PN[2701] Instead
Not for LT1 or Chevy Bowtie Heads
Not for 1987 and Later Stock Aluminum Heads

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$530.99

Product Features:

Designed for 1500 to 5500 RPM Performance
Low Profile for Hood Clearance on Most Vehicles
Air-Conditioning/Front Oil Tube Bosses Included
Stock Alternator Brackets Do Not Fit
Use Edelbrock Fuel Line Kit PN[8088] w/Our Carbs
Carburetor Center-to-Center Dimensions = 6-7/16 in
Use Edelbrock Linkage Kit PN[7094] w/Our Carbs
Best Matched with Edelbrock 500 cfm Carburetors

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$497.99

Edelbrock part #2711 Performer Oldsmobile 350 intake manifold is designed for 1964-85, 307-330-350-403 c.i.d. Oldsmobile V8 applications. For non-EGR, the #2711 manifold comes with a universal pad to fit most carburetors with electric chokes. Will fit 198

Product Features:

Idle-5500 RPM Range
Dual Plane Type-4150 Style Flange
3.74 in. Front Height, 4.27 in. Center Height, 4.8 in. Rear Height
Satin Finish
Non-EGR

Popular 1966 Pontiac LeMans Performance Engines Categories

Performance Engine Coolant Thermostats

Performance Intake Manifolds

Performance Engine Camshaft and Lifter Kits

Performance Engine Intake Manifold Gaskets

Performance Engine Timing Sets and Components

Performance Engine Valve Springs

Performance Engine Valve Cover Gasket Sets

Performance Engine Rocker Arms

Performance Engine Camshafts

Performance Engine Oil Pan Gaskets

Performance Engine Valve Lifters

Performance Engine Push Rods

Performance Engine Valve Spring Retainer

Performance Torque Converters

Performance Engine Valve Stem Seal Sets

Most Popular Performance Engine Valve Cover Gasket Sets for 1966 Pontiac LeMans

Enhance your 1966 Pontiac LeMans with one of the 3 Performance Engine Valve Cover Gasket Sets we have in stock, starting at just $23.29.

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from

$27.99

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

from

$34.99

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

Product Features:

Blue Stripe performance cork-rubber gaskets use cork particles evenly distributed throughout a rubber binder resulting in a compressible gasket without leak paths.
Not intended for use in emission controlled vehicles.

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$23.29

Fel-Pro® Performance Gaskets deliver reliable sealing under grueling racing conditions.

Product Features:

Blue Stripe® performance cork-rubber gaskets use cork particles evenly distributed throughout a rubber binder resulting in a compressible gasket without leak paths.
Not intended for use in emission controlled vehicles.

Best-Selling 1966 Pontiac LeMans Performance Engine Oil Pan Gasket

Upgrade your LeMans with our best-selling Performance Engine Oil Pan Gasket.

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from

$30.49

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.

Top-Quality Performance Engine Intake Manifold Gaskets for 1966 Pontiac LeMans

Choose a high-quality OEM or aftermarket Performance Engine Intake Manifold Gasket for Pontiac LeMans and enjoy top-notch performance from $34.99.

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$34.99

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

Product Features:

DESIGNED FOR IMPERFECT SEALING SURFACES — Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
SEALING TECHNOLOGIES — Exclusive sealing innovations and technologies with proprietary materials and unique design features to ensure a superior seal for your repair
ENGINEERING EXPERTISE — Parts are designed, reviewed, validated and approved by Fel-Pro engineers through rigorous research and development
REAL-WORLD TESTED — Parts are tested on-vehicle and validated to ensure optimal performance on the road
EVERY PART FOR THE REPAIR — Fel-Pro gasket sets include every part needed for the repair unless otherwise noted

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$34.99

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

Top Picks for 1966 Pontiac LeMans Performance Engine Coolant Thermostats

Invest in one of our 3 durable Performance Engine Coolant Thermostats for your 1966 Pontiac, knowing you’re getting trusted brands and expert craftsmanship.

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$29.99

Opens At 180 Degrees
Designed to Resist Large Variations of Coolant Pressure at High RPM
Fully Opens at Correct Temperature Consistently Regardless of Engine RPM
For High Performance Street, Drag Race, and Oval Track
Copper & Brass Construction – Resists Corrosion
High Flow

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$29.49

Opens at 160 Degrees
Designed to Resist Large Variations of Coolant Pressure at High RPM
Fully opens at Correct Temperature Consistently Regardless of engine RPM
For High Performance Street, Drag Race, and Oval Track
Copper & Brass Construction – Resists Corrosion
High Flow

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$31.99

Opens At 195 Degrees
Designed to Resist Large Variations of Coolant Pressure at High RPM
Fully Opens at Correct Temperature Consistently Regardless of Engine RPM
For High Performance Street, Drag Race, and Oval Track
Copper & Brass Construction – Resists Corrosion
High Flow

Our Performance Intake Manifolds for 1966 Pontiac LeMans

Make a smart move for your 1966 Pontiac LeMans with our Performance Intake Manifold for $573.99.

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$573.99

Edelbrock part #21563 Performer Pontiac intake manifold is designed for 1965-79 Pontiac 326-455 c.i.d. V8’s (except Ram Air V and 265/301 V8’s). Provides great throttle response for performance you can feel. Ideal for cars, 4x4s, tow vehicles, RVs and boa

Product Features:

Idle-5500 RPM Range
Dual Plane Type-4150 Style Flange
5.5 in. Front Height, 6.05 in. Center Height, 6.6 in. Rear Height
Black Powder Coated Finish
Non-EGR

Top-Rated Performance Engine Brands For Your 1966 Pontiac LeMans

When it comes to finding the perfect Performance Engine for your 1966 Pontiac LeMans, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 5 trusted brands. We carry the most popular Performance Engine brands including Competition Cams, and more, all known for their exceptional customer ratings (average brand rating of 4.1 stars) and competitive prices, as low as $223.99. Purchasing a Performance Engine from us here at Advance Auto Parts is a smart move for both you and your 1966 Pontiac LeMans, providing peace of mind with parts that meet or exceed OEM standards.

Popular Competition Cams 1966 Pontiac LeMans Performance Engines

If you’re looking for a top-quality Performance Engine for your 1966 Pontiac LeMans, Advance Auto Parts has exactly what you need with our selection of Competition Cams Performance Engines. We have 1 Competition Cams Performance Engines in stock for this fitment, all known for their durability and precision fit. With prices starting at just $223.99, you’ll find the perfect Performance Engine for your needs and budget. Competition Cams Performance Engines for the 1966 Pontiac LeMans come highly rated, with over 1 customer reviews and an impressive average rating of 4.1 stars. Choosing a Competition Cams Performance Engine from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.

from $223.99

(1)

Set of 16 O-Ring Valve Seals for Stock Guide Size, 11/32" Valve Stem

“Replaced as original, super easy to install!”

FAQs for 1966 Pontiac LeMans Performance Engines

What are the best-selling Performance Engines for 1966 Pontiac LeMans?

Out of 84 Performance Engines that fit 1966 Pontiac LeMans, the following parts are the top sellers:

High Performance Thermostat (22903641) – $31.99
Lower Intake Manifold Gasket Set: 12 Piece Set (19781609) – $34.99
Intake Gasket (17360260) – $34.99

What’s the price range for 1966 Pontiac LeMans Performance Engines?

The prices of Performance Engines for the 1966 Pontiac LeMans range from $10.99 up to $899.99 for the most premium parts.

What is the average price of a Performance Engine for a 1966 Pontiac LeMans?

The average price for Performance Engines for the 1966 Pontiac LeMans is $274.57. Keep in mind the variety of part types within our Performance Engine category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Performance Engines for other Pontiac LeMans model years?

Yes, we carry Performance Engines for 17 model years of Pontiac LeMans between 1963 and 1981. The following model years are the most popular for Performance Engine purchases: 1981, 1980, 1979, 1978, 1977, 1976, 1975, 1974, and 1973.

What are the cheapest Performance Engines for my 1966 Pontiac LeMans?

The cheapest 1966 Pontiac LeMans Performance Engines we carry are:

7 Degree Steel Retainer for 3/8" Valves with 1.500"-1.550" Spring (50289506) – $10.99
7 Degree Steel Retainer for 11/32" Valve with 1.437"-1.500" Spring (50289120) – $10.99
10 Degree Superlock Steel Retainer for 1.437"-1.500" OD Valve Spring (50289470) – $10.99
10 Degree Steel Retainer for 26120 Beehive Spring (50289146) – $10.99
10 Degree Superlock Steel Retainer for 1.500"-1.550" OD Valve Spring (50289496) – $10.99

Does Advance Auto Parts sell Performance Engines for any other 1966 Pontiac models?

Yes. We stock Performance Engines for 5 other popular 1966 Pontiac models. Some of the most popular are 1966 Grand Prix Performance Engines, 1966 Bonneville Performance Engines, 1966 GTO Performance Engines, 1966 Catalina Performance Engines, and 1966 Tempest Performance Engines.

What are the top-rated Performance Engines that fit the 1966 Pontiac LeMans?

The one 1966 Pontiac LeMans Performance Engine we have in stock is the 7 Degree Steel Retainer for 3/8" Valves with 1.500"-1.550" Spring. It costs $10.99.

What types of Performance Engines do you sell for my 1966 Pontiac LeMans?

As of 11/2/25, these are some of the most in-demand types of Performance Engines for a 1966 Pontiac LeMans:

Can I get help with 1966 Pontiac LeMans Performance Engine orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Pontiac Performance Engines and more.

What is your return policy for Pontiac LeMans Performance Engines?

Advance Auto Parts keeps returns simple. For new Pontiac LeMans Performance Engines and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.

1966 Pontiac LeMans Performance Engines

Mr. Gasket – Advance And Retard Cam Bushings (Part No.85)

Competition Cams – Set of 16 O-Ring Valve Seals for Stock Guide Size, 11/32" Valve Stem (Part No.501-16)

FEL-PRO Performance – PERFORMANCE OIL PAN GASKET SET (Part No.1818)

Mr. Gasket – Ultra Seal: Oil Pan Gasket (Part No.5884)

Edelbrock – Performer Series Retainer (Qty 16) (Part No.9721)

Edelbrock – Performer Series Retainer (Qty 16) (Part No.9724)

Edelbrock – Pushrod Set for S/B Chevy (Part No.9630)

Competition Cams – Magnum 7.800" Long, .080" Wall, 3/8" Diameter Pushrod Set (Part No.7513-16)

Mr. Gasket – High Performance 180 Degree Thermostat for Increased Flow (Part No.4364)

Mr. Gasket – High Performance Thermostat – 160 Degree Brass & Copper (Part No.4363)

Edelbrock – Complete Sure Seat Valve Spring Kit for Chevy 262-400 V8 1957-95 (Part No.5894)

Edelbrock – Complete Sure Seat Valve Spring Kit for Chevy 262-400 V8 1957-95 (Part No.5794)

Mr. Gasket – Gskt Valve Cover (Part No.576)

FEL-PRO Performance – Engine Valve Cover Gasket Set (Part No.1622)

Edelbrock – Intake Manifold Gasket for 1958-1986 Small-Block Chevy (Part No.7201)

Mr. Gasket – Intake Gasket (Part No.143)

Competition Cams – High Energy 206/206 Hydraulic Flat Cam K-Kit (Part No.K12-205-2)

Competition Cams – Xtreme Energy 224/230 Hydraulic Flat Cam K-Kit (Part No.K51-223-4)

B & M – Torque Converter, Nitrous Holeshot 3600 (Part No.20482)

B & M – Holeshot 2400 (Part No.20412)

Competition Cams – Ultra-Gold ARC Rocker Set w/ 1.6 Ratio for Chevrolet Small Block w/ 3/8" Stud (Part No.19002-16)

Mr. Gasket – Ultra Seal: Screw-In Rocker Arm Studs (Part No.1076)

Competition Cams – Xtreme Energy 250/256 Hydraulic Flat Cam (Part No.42-226-4)

Competition Cams – Xtreme Energy 224/230 Hydraulic Flat Cam (Part No.51-223-4)

Competition Cams – Magnum 224/224 Hydraulic Flat Cam (Part No.51-233-4)

Edelbrock – Torker II Intake Manifold Small-Block Chevy (Part No.5001)

Edelbrock – C-26 Small Block Chevy Dual-Quad Intake Manifold (Part No.5425)

Edelbrock – Performer Olds 350 Intake Manifold for 307-330-350-403 Small-Block Oldsmobile (Part No.2711)

Mr. Gasket – Gskt Valve Cover (Part No.576)

FEL-PRO Performance – Engine Valve Cover Gasket Set (Part No.1622)

FEL-PRO Performance – Performance Valve Cover Gasket Set (Part No.1623)

FEL-PRO Performance – PERFORMANCE OIL PAN GASKET SET (Part No.1814)

FEL-PRO Performance – Lower Intake Manifold Gasket Set: 12 Piece Set (Part No.1233)

Mr. Gasket – Intake Gasket (Part No.502G)

Mr. Gasket – High Performance 180 Degree Thermostat for Increased Flow (Part No.4364)

Mr. Gasket – High Performance Thermostat – 160 Degree Brass & Copper (Part No.4363)

Mr. Gasket – High Performance Thermostat (Part No.4365)

Edelbrock – Performer Intake Manifold for 1965-79 Pontiac 326-455 Non-EGR, Black Finish (Part No.21563)