1966 Pontiac LeMans Performance Engines

Essential 1966 Pontiac LeMans Performance Engines

B & M – Holeshot 2400 (Part No.20412)

Holeshot 2400

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$499.99
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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B & M – Holeshot 3600 (Part No.20425)

Holeshot 3600

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$825.99
HoleShot 3600 for GM 1965 to 1991 TH400, 425, 375 and 1968 to 1981 TH350, 375B (not 350C) APPLICATION: HoleShot 3600 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 converter will provide several advantages and benefits in vehicles with modified engines. Many modifications, particularly big cams, tend to reduce low end power and torque. The high stall converter allows the engine to launch the car at higher rpm where more torque is available. The Holeshot is generally a very good choice for the typical street machine that is looking for better launch capability and more strength. Street rods with modified engines will also benefit from a Holeshot converter. If your vehicle is equipped with a plate type nitrous system, you will need a Nitrous Holeshot!! 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. Furnace brazed impeller. New precision steel alloy pump drive tube. New heavy duty needle bearing between stator and impeller (not a thrust washer). Needle bearing between stator and turbine. Furnace brazed turbine. Dual pattern drive lugs on some GM Holeshots. New turbine hub. New springs and rollers in stator.

Product Features:
  • Furnace Brazed Impeller
  • Steel Alloy Pump Drive Tube
  • Heavy Duty Needle Bearing
  • Between Stator and Turbine
  • Furnace Brazed Turbine
  • Dual Pattern Drive Lugs
  • New Turbine Hub
  • New Springs/Rollers In Stator
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B & M – Performance Torque Converter for GM TH400, 350, & 375 Transmissions (Part No.20400)

Performance Torque Converter for GM TH400, 350, & 375 Transmissions

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$299.99
Torque Converter – Tork Master 2000 for GM 1965 to 1991 TH400, 425, 375 and 1968 to 1981 TH350, 375B (not 350C) APPLICATION: Tork Master 2000 for GM 1965 to 1991 TH400, 425, 375 and 1968 to 1981 TH350, 375B (not 350C) The Tork Master is B&M’s lowest cost

Product Features:
  • New Precision Pump Drive Tube
  • Pressure Tested
  • Fully Balanced
  • Needle Thrust Bearing
  • New Thrust Washer
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Edelbrock – Performer-Plus Camshaft Kit for Buick 231-252 V6 Even Fire (Part No.5487)

Performer-Plus Camshaft Kit for Buick 231-252 V6 Even Fire

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$367.99


Product Features:
  • Designed for Optimum Torque and Acceleration
  • Maximum Performance From Idle through Mid-Range
  • Matched To Performer Intake PN[5486]
  • Includes Hydraulic Lifters and Assembly Lube
  • Major Improvement in Throttle Response and Torque
  • Use For Daily Drivers/Trucks/Vans/RVs/4x4s
  • Take The Guesswork Out Of Camshaft Selection
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Competition Cams – High Energy 212/212 Hydraulic Flat Cam K-Kit (Part No.K51-230-3)

High Energy 212/212 Hydraulic Flat Cam K-Kit

from

$622.99
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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Edelbrock – Performer-Plus Camshaft Kit for Pontiac 350-403 V8 (Part No.2157)

Performer-Plus Camshaft Kit for Pontiac 350-403 V8

from

$358.99


Product Features:
  • Designed for Optimum Torque and Acceleration
  • Maximum Performance From Idle through Mid-Range
  • Matched to Edelbrock Performer Intakes
  • Includes Hydraulic Lifters and Assembly Lube
  • Major Improvement in Throttle Response and Torque
  • Use For Daily Drivers/Trucks/Vans/RVs/4x4s
  • Take The Guesswork Out Of Camshaft Selection
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Edelbrock – C357-B Three-Deuce Intake Manifold #54191 1964-1983 Small-Block Chevy, Polished (Part No.54191)

C357-B Three-Deuce Intake Manifold #54191 1964-1983 Small-Block Chevy, Polished

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$608.99


Product Features:
  • Polished PN[54191] Hand-Buffed for Brilliant Shine
  • Manifold has a Balanced 180+ Firing Order
  • Contains Exhaust Gas Heat Riser
  • Offers Excellent Performance Potential
  • Front Oil Filler Tube Boss Included
  • Carburetor Center-to-Center Dimensions = 5-1/2 in
  • Also Available Polished PN[5419] But Not Fit HEI
  • Use Rochester 2GC (small 1-7/16 in bore)
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Weiand – Team G; Intake Manifold (Part No.7531)

Team G; Intake Manifold

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$999.99


Product Features:
  • Designed For Today’s Larger Cubic Inch Big Block
  • Perfect For Hard Core Drag Racers
  • Permanent Mold Casting Process
  • For Lighter And More Consistent Castings
  • Dyno Proven To Make 17hp More Than Competitors
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Weiand – X-CELerator; Intake Manifold (Part No.7547-1)

X-CELerator; Intake Manifold

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$259.99


Product Features:
  • 2000-6500 RPM Power Band
  • Single Plane/Open Plenum Design
  • No Provision For Divorced Or Hot Air Choke
  • Square Flange Carburetor Mounting
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Spectre – Water Neck; Olds (Part No.4733)

Water Neck; Olds

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$26.99
Spectre’s Oldsmobile V8 water neck fits Oldsmobile 330, 350, 425 and 455 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 has an additional by-pass hose connection and includes the bolts.

Product Features:
  • Fits Oldsmobile 330, 350, 425 and 455 engines
  • Chrome plated
  • Bolts included
  • Designed for OEM fit
  • Easy to install
  • O-ring/gasket not included
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Spectre – Water Neck; Pontiac V8 (Part No.4737)

Water Neck; Pontiac V8

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$23.79
Spectre’s Pontiac water neck fits 1967 – 1978 Pontiac V8 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 and sealing O-ring.

Product Features:
  • Fits 1967 – 1978 Pontiac V8 engines
  • Includes sealing O-ring and bolts
  • Chrome plated
  • Easy to install
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Spectre – Water Neck; Chevy Late Model (Part No.4730)

Water Neck; Chevy Late Model

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$23.79
Spectre’s Chevrolet late model water neck offers the normal angled water neck and a 1/2 inch NPT threaded hole for a by-pass hose. This water neck has a chrome plated finish for a lasting look great and includes the bolts.

Product Features:
  • Fits Chevy engines
  • Includes a 1/2 inch NPT threaded hole for by-pass hose
  • Includes bolts
  • Chrome plated
  • Easy to install
  • O-ring/gasket not included
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Mr. Gasket – High Performance 180 Degree Thermostat for Increased Flow (Part No.4364)

High Performance 180 Degree Thermostat for Increased Flow

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$26.99
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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Edelbrock – Valve Cover Gasket Set for Chevrolet (Part No.7549)

Valve Cover Gasket Set for Chevrolet

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$35.99
Product Features:
  • Valve Cover Gasket
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Mr. Gasket – Ultra Seal: Valve Cover Gasket Set (Part No.5869)

Ultra Seal: Valve Cover Gasket Set

from

$36.49
Ultra-Seal is Mr. Gasket premium valve cover gasket material. It’s manufactured from a high density cork and rubber blend with a black latex coat applied to the outside to help seal minor flange irregularites and eliminate oil leakage. It creates a positive seal by controlled swelling of the gasket material when exposed to hot oil. For original equipment replacement, high performance street, drag race and oval track use. Sold as a pair, these gaskets are .187 inch thick.

Product Features:
  • Manufactured from high-density cork /rubber blend gasket material
  • A black latex rubber coating is applied to outside of gasket to help seal minor flange irregularities and eliminate the possibility of oil leakage
  • Creates a positive seal by controlled swelling of the gasket material when exposed to hot engine oil
  • For OE replacement, high performance street, drag race and oval track
  • .187″ thick
  • Handles Ex Flange Pressure
  • Forms Leak Proof Seal
  • Black Latex Coating
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FEL-PRO Performance – Engine Valve Cover Gasket Set (Part No.1622)

Engine Valve Cover Gasket Set

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$32.49
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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FEL-PRO Performance – PERFORMANCE OIL PAN GASKET SET (Part No.1814)

PERFORMANCE OIL PAN GASKET SET

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.
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FEL-PRO Performance – PERFORMANCE OIL PAN GASKET SET (Part No.1800)

PERFORMANCE OIL PAN GASKET SET

from

$18.29
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 – Engine Sealing (Part No.6560)

Engine Sealing

from

$499.99
Manufactured from cellulose and 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 OE replacement, high performance street, drag race and oval track.

Product Features:
  • Made of high temp silicone or nitrile blend rubber
  • Torque limiters to prevent over tightening
  • One piece molded rubber
  • Fits left and right hand dipsticks
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FEL-PRO Performance – PERFORMANCE OIL PAN GASKET SET (Part No.1818)

PERFORMANCE OIL PAN GASKET SET

from

$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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FEL-PRO Performance – Lower Intake Manifold Gasket Set: 3 Piece Set (Part No.1200)

Lower Intake Manifold Gasket Set: 3 Piece Set

from

$31.49
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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Mr. Gasket – Intake Gasket (Part No.116)

Intake Gasket

from

$40.19
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. 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.
  • For OE replacement, high performance street, drag race and oval track use.
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Mr. Gasket – Intake Gasket (Part No.143)

Intake Gasket

from

$42.49
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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FEL-PRO Performance – Lower Intake Manifold Gasket Set: 12 Piece Set (Part No.1233)

Lower Intake Manifold Gasket Set: 12 Piece Set

from

$34.49
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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Mr. Gasket – Ultra Seal: Sure-Lock Rocker Arm Nuts (Part No.920G)

Ultra Seal: Sure-Lock Rocker Arm Nuts

from

$64.19
These are high quality nuts with allen set screws to provide you with that positive lock needed for Race or original equipment Rocker Arms.

Product Features:
  • They Are Zinc Dichromate Plated Steel
  • They Have Black Oxide Coated Set Screws
  • Keeps Rocker Arms Positively Locked
  • (16) Rocker Arm Nuts w/ Locks 3/8″-24 Threads
  • Includes Locks and Hex Wrench
  • Shank O.D. .603″
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Mr. Gasket – Ultra Seal: Screw-In Rocker Arm Studs (Part No.1076)

Ultra Seal: Screw-In Rocker Arm Studs

from

$65.99
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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Competition Cams – MAGNUM ROLLER ROCKERS, SMALL BLOCK CHEVY 1.52 1 ST (Part No.1412-16)

MAGNUM ROLLER ROCKERS, SMALL BLOCK CHEVY 1.52 1 ST

from

$213.99
These Magnum Roller Rocker Arms for Chevy V8 265-400 and V6 200-262 applications are the ultimate street rocker. With a 3/8″ stud diameter and 1.52 ratio, they are designed for serious performance enthusiasts. All Magnum Roller Rocker Arms are constructed

Product Features:
  • Roller tip reduces friction while stiff design and superior ratio accuracy yield more effective valve lift
  • For applications with less than 350 lbs. of open spring pressure
  • Constructed from 8620 chromemoly steel, a superior material that will not flex and ensures maximum lift
  • Ultimate street roller rocker arm designed for serious performance enthusiasts
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Mr. Gasket – Ultra Seal: Competition Screw-In Rocker Arm Studs (Part No.1075)

Ultra Seal: Competition Screw-In Rocker Arm Studs

from

$94.99
Mr. Gasket competition screw-in rocker arm studs are manufactured from heat treated black oxide coated Grade 8 steel. Ideal for high performance street and race applications.

Product Features:
  • Black Oxide Coated Grade 8 Steel
  • Kit Contains 16 Studs
  • Easy To Install
  • Heat Treated Steel
  • Prevents Stud Flexing
  • Black Plated Finish
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1966 Pontiac LeMans Performance Engines

Maybe you’re in the middle of a full rebuild of that 1966 Pontiac LeMans. Maybe you just need a couple of Performance Engines. Either way, Advance Auto Parts has 13 different Performance Engines in our inventory ranging from $23.29 to $718.99. That means you can find the exact parts or products you need to keep that 1966 Pontiac LeMans running smoothly.

Performance Engines are only as good as their brand. We stock 6 different brands to make sure you have plenty of trusted parts to choose from for your 1966 Pontiac LeMans. Mr. Gasket, FEL-PRO Performance, and Spectre 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 Pontiac LeMans, but don’t take our word for it – read our customer ratings and reviews and buy with confidence.

So if you’re in the market for aftermarket Performance Engines to keep your 1966 Pontiac LeMans 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 Pontiac LeMans Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1966 Pontiac LeMans 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 LeMans the best it can be. Be sure to browse some of our top Performance Engines brands and parts.

Popular Spectre Performance Engines

We carry Spectre parts in our stock across Performance Water Outlets categories, plus more. For a 1966 Pontiac LeMans, our most popular Spectre Performance Engines include:
Water Neck; Pontiac V8
from $23.79
(2)
Water Neck; Pontiac V8
Performance Water Outlets

Top 1966 Pontiac LeMans Performance Engines from Mr. Gasket

Mr. Gasket products are another trusted brand when it comes to Performance Engines for your 1966 Pontiac LeMans. Popular Mr. Gasket parts include:
High Performance 180 Degree Thermostat for Increased Flow
from $26.99
(20)
High Performance 180 Degree Thermostat for Increased Flow
Performance Engine Coolant Thermostats

FAQs for 1966 Pontiac LeMans Performance Engines

What are the most purchased Performance Engines for the 1966 Pontiac LeMans?

Out of 13 Performance Engines for the 1966 Pontiac LeMans, the most popular in our inventory are:
Lower Intake Manifold Gasket Set: 12 Piece Set
from $34.49
This product is not rated
Lower Intake Manifold Gasket Set: 12 Piece Set
Performance Engine Intake Manifold Gaskets
PERFORMANCE OIL PAN GASKET SET
from $30.49
This product is not rated
PERFORMANCE OIL PAN GASKET SET
Performance Engine Oil Pan Gaskets
Ultra Seal: Valve Cover Gasket Set
from $36.49
This product is not rated
Ultra Seal: Valve Cover Gasket Set
Performance Engine Valve Cover Gasket Sets