1981 Pontiac Grand Lemans Performance Engines

Keep Your 1981 Pontiac Grand 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 1981 Pontiac Grand Lemans looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Performance Engine Valve Stem Seal Sets, Performance Engine Cylinder Head 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 161 reviews and a solid 4 star average, you can shop with confidence knowing other Pontiac Grand Lemans owners approve.

Explore Related Parts

While you’re upgrading or replacing your Performance Engine, don’t forget to check out other key components like Performance Fuel Systems and Performance Oil Filters. At Advance Auto Parts, we’re here to help you keep your 1981 Pontiac Grand Lemans in peak condition, inside and out.

Essential 1981 Pontiac Grand Lemans Performance Engines

B & M – Performance Torque Converter for GM TH400, 350, & 375 Transmissions (Part No.20400)

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

from

$329.99
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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B & M – Torque Converter, Nitrous Holeshot 3000 (Part No.20481)

Torque Converter, Nitrous Holeshot 3000

from

$899.99
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:
  • 2800-3200 RPM
  • Small And Big Blocks
  • Serious Performance
  • Furnace Brazed
  • Fully Balanced
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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

from

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

High Performance Thermostat - 160 Degree Brass & Copper

from

$29.49
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 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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Edelbrock – Performer Series Retainer (Qty 16) (Part No.9724)

Performer Series Retainer (Qty 16)

from

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

Performer Series Retainer (Qty 16)

from

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

Intake Manifold Gasket for 1958-1986 Small-Block Chevy

from

$28.99


Product Features:
  • Clean Positive Seal
  • Embossed Silicone Bead Surrounding The Port
  • Matched To Manifolds And Cylinder Heads
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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

$32.99
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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Competition Cams – Magnum Roller 1.6 Ratio Rocker Arm Set (Part No.1431-16)

Magnum Roller 1.6 Ratio Rocker Arm Set

from

$350.99
These Magnum Roller Rocker Arms for Ford V8 289-351W (Rail Type) 1968-89 applications are the ultimate street rocker. With a 3/8″ stud diameter and 1.6 ratio, they are designed for serious performance enthusiasts. All Magnum Roller Rocker Arms are constructed from 8620 chromemoly steel, which is a superior material that will not flex and assures maximum lift. Their roller tip reduces friction, while stiff design and superior ratio accuracy yield more effective valve lift. With a 15 to 30 horsepower increase over other rocker arms, Magnum Roller Rockers are perfect for performance applications with less than 350 lbs. open spring pressure. Don’t accept inferior products or cheap knock-offs, look for the COMP Cams logo stamped into the underside of every Magnum Rocker.

Product Features:
  • Ultimate street rocker designed for serious performance enthusiasts
  • Constructed from 8620 chromemoly steel, a superior material that will not flex and assures maximum lift
  • Roller tip reduces friction while stiff design and superior ratio accuracy yields more effective valve lift
  • 15 to 30 horsepower increase over stock rocker arms
  • Use in any applications with less than 350 lbs. open spring pressure
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Competition Cams – High Energy Aluminum 1.5 Ratio Roller Rocker Set for SBC 265-400 w/ 3/8" Stud (Part No.17001-16)

High Energy Aluminum 1.5 Ratio Roller Rocker Set for SBC 265-400 w/ 3/8" Stud

from

$249.99
These High Energy Die Cast Aluminum Roller Rocker Arms for Chevy V8 265-400 applications are perfect for street and moderate race use. With a 3/8″ stud diameter and 1.5 ratio, the die cast, larger-than-stock body of the rocker arms is made of aluminum for superior strength with light overall weight. High Energy Die Cast Aluminum Roller Rocker Arms from COMP Cams are an affordable option that feature a die cast, aluminum body with a needle bearing fulcrum and roller tip. Designed to be stiffer and more durable, these cost effective rocker arms are capable of providing added valve lift while withstanding the rigors of a performance application. Their specially engineered fulcrum and roller tip create far less friction than sliding factory models to lower oil temperatures, thus improving both response and horsepower. Snap rings are used to hold the trunion and bearings locked in place..

Product Features:
  • Cost effective aluminum construction provides superior strength to weight ratio
  • Needle bearing fulcrum and roller tip reduce friction and lower oil temperatures for improved response and horsepower
  • Durable design increases valve lift while withstanding the rigors of moderate race use
  • Die-formed aluminum body is larger than stock, and may require modifications to stock valve covers for clearance.
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Competition Cams – Xtreme Energy 230/236 Hydraulic Flat Cam K-Kit (Part No.K51-224-4)

Xtreme Energy 230/236 Hydraulic Flat Cam K-Kit

from

$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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Competition Cams – Magnum 224/224 Hydraulic Flat Cam and Lifter Kit (Part No.CL12-212-2)

Magnum 224/224 Hydraulic Flat Cam and Lifter Kit

from

$305.99
SMALL BLOCK CHEVY HYDRAULIC CAM AND LIFTER KIT – Magnum: Great for street machines. Needs 2200+ stall, headers and gears. Rough idle.

Product Features:
  • Cam and lifter kit for Small Block Chevy engines
  • CL-Kit includes cam, lifters, assembly lube, instructions and decals
  • HYDRAULIC – Magnum: Great for street machines. Needs 2200+ stall, headers and gears. Rough idle.
  • 280/280 Advertised Duration, 230/230 Duration @ .050″, .480″/.480″ Lift, 110 Lobe Separation
  • Valve spring upgrade required
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Competition Cams – Set of 16 O-Ring Valve Seals for Stock Guide Size, 11/32" Valve Stem (Part No.501-16)

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

from

$223.99
VALVE SEALS, O-RING 11/32″ 1 ST
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Competition Cams – Set of 16 Umbrella Valve Seals for Stock Guide Size, 11/32" Valve Stem (Part No.502-16)

Set of 16 Umbrella Valve Seals for Stock Guide Size, 11/32" Valve Stem

from

$230.99
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 stock guides and 11/32″ 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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FEL-PRO Performance – Cylinder Head Gasket: Steel Core Composite, Without Head Bolts (Part No.1010)

Cylinder Head Gasket: Steel Core Composite, Without Head Bolts

from

$51.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • PROPRIETARY COATING – Nonstick anti-friction coating seals small surface imperfections
  • NO RETORQUE DESIGN – Steel core helps eliminate the need for retorquing head bolts
  • SUPERIOR SEAL – Precise embossed Printoseal sealing beads at all vital areas to eliminate leak paths
  • STRONG AND DURABLE – Features graphite or reinforced fiber facing material and steel armor for strength and durability
  • DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
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Mr. Gasket – Ultra Seal: Head Gasket (Part No.5799G)

Ultra Seal: Head Gasket

from

$79.99
Mr. Gasket Ultra-Seal Head Gaskets are a five layer (graphite core/perforated steel outer layers) composite construction. The graphite core has excellent thermoconductivity (transfers heat) away from hot spots in head preventing gasket burn-out. They provide excellent stability, compressibility and high temperature endurance. A high temperature silicone coating ensures sealing of engine fluids. Compatible with cast iron or aluminum heads, they will not brinell (indent) aluminum cylinder heads. Suitable for high performance street, drag race and oval track use. Sold individually.brbrGasket Bore 4.130 inch, Compressed thickness 0.055 inch

Product Features:
  • Five layer (graphite core/perforated steel outer layers) composite construction
  • Graphite core is excellent transfering heat away from hot spots in head preventing gasket burn-out.
  • Provides excellent stability, compressibility and high temperature endurance
  • Coated with high temperature silicone to ensure sealing of engine fluids
  • Will not brinell (indent) aluminum cylinder heads
  • For high performance street, drag race and oval track use
  • Compatible w/High Octane Fuel
  • Compatible With Exotic Fuel
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Competition Cams – Magnum 7.800" Long, .080" Wall, 3/8" Diameter Pushrod Set (Part No.7513-16)

Magnum 7.800" Long, .080" Wall, 3/8" Diameter Pushrod Set

from

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

Pushrod Set for S/B Chevy

from

$199.99


Product Features:
  • Case-Hardened Tubing
  • Welded Ends
  • 5/16 in. Diameter
  • Use with or without Hardened Steel Guideplates
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Competition Cams – Xtreme Energy 212/218 Hydraulic Flat Cam (Part No.51-221-4)

Xtreme Energy 212/218 Hydraulic Flat Cam

from

$298.99
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.
See More

Competition Cams – High Energy 212/212 Hydraulic Flat Cam (Part No.42-228-4)

High Energy 212/212 Hydraulic Flat Cam

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.

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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Competition Cams – Xtreme Energy 206/212 Hydraulic Flat (Part No.42-220-4)

Xtreme Energy 206/212 Hydraulic Flat

from

$366.99
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.
See More

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

Xtreme Energy 250/256 Hydraulic Flat Cam

from

$297.99
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.
See More

Competition Cams – Xtreme Energy 230/236 Hydraulic Flat Cam (Part No.51-224-4)

Xtreme Energy 230/236 Hydraulic Flat Cam

from

$298.99
HYDRAULIC – Xtreme Energy: High performance street, very strong mid-range, headers and 2200+ stall.

Product Features:
  • HYDRAULIC – Xtreme Energy: High performance street, very strong mid-range, headers and 2200+ stall.
  • 274/286 Advertised Duration, 230/236 Duration @ .050″, .488″/.491″ Lift, 110 Lobe Separation
  • Valve spring upgrade required
  • Best performance with aftermarket intake manifolds, headers, lower gear ratios etc.
See More

Edelbrock – Sure Seat Valve Springs for Chevy 262-400 V8 1957-95 (Part No.5802)

Sure Seat Valve Springs for Chevy 262-400 V8 1957-95

from

$64.99
Springs made of highest quality spring wire. Springs precision wound to close tolerances. Non-Rotator style: Dyno tested and street proven. Great match to Edelbrock camshaft kit.

Product Features:
  • For Use With Cast Iron Heads
  • Springs Made of Highest Quality Spring Wire
  • Springs Precision Wound To Close Tolerances
  • Use with Original Equipment Heads Only
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Edelbrock – Complete Sure Seat Valve Spring Kit for Chevy 262-400 V8 1957-95 (Part No.5794)

Complete Sure Seat Valve Spring Kit for Chevy 262-400 V8 1957-95

from

$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 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
  • Non-Rotator Style: Dyno Tested and Street Proven
  • Great Match to Edelbrock Camshaft Kit
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Edelbrock – Complete Sure Seat Valve Spring Kit for Chevy 262-400 V8 1957-95 (Part No.5894)

Complete Sure Seat Valve Spring Kit for Chevy 262-400 V8 1957-95

from

$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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Edelbrock – Sure Seat Valve Springs for S/B Chevy O.E Cast iron Cylinder Heads (Part No.5703)

Sure Seat Valve Springs for S/B Chevy O.E Cast iron Cylinder Heads

from

$69.99
Springs made of highest quality spring wire. Springs precision wound to close tolerances. Non-Rotator style: Dyno tested and street proven. Great match to Edelbrock camshaft kit.

Product Features:
  • For Use With Cast Iron Heads
  • Springs Made of Highest Quality Spring Wire
  • Springs Precision Wound To Close Tolerances
  • Use with Original Equipment Heads Only
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Most Popular Performance Engine Valve Stem Seal Sets for 1981 Pontiac Grand Lemans

Enhance your 1981 Pontiac Grand Lemans with one of the 2 Performance Engine Valve Stem Seal Sets we have in stock, starting at just $223.99.

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

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

from

$223.99
VALVE SEALS, O-RING 11/32″ 1 ST
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Competition Cams – Lifter Bore Grooving Kit with .842" and .875" Tools (Part No.5011)

Lifter Bore Grooving Kit with .842" and .875" Tools

from

$445.99
Lifter Bore Grooving Kit with .842" and .875" Tools

Best-Selling 1981 Pontiac Grand Lemans Performance Engine Cylinder Head Gasket

Upgrade your Grand Lemans with our best-selling Performance Engine Cylinder Head Gasket.

FEL-PRO Performance – Performance Cylinder Head Gasket (Part No.1000)

Performance Cylinder Head Gasket

from

$61.99
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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Top-Quality Performance Engine Intake Manifold Gaskets for 1981 Pontiac Grand Lemans

Choose a high-quality OEM or aftermarket Performance Engine Intake Manifold Gasket for Pontiac Grand Lemans and enjoy top-notch performance from $32.99.

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

Lower Intake Manifold Gasket Set: 3 Piece Set

from

$32.99
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
See More

Top Picks for 1981 Pontiac Grand Lemans Performance Engine Rocker Arms

Invest in one of our 4 durable Performance Engine Rocker Arms for your 1981 Pontiac, knowing you’re getting trusted brands and expert craftsmanship.

Competition Cams – ENGINE ROCKER ARM (Part No.19060-16)

ENGINE ROCKER ARM

from

$621.99
ENGINE ROCKER ARM

Competition Cams – ENGINE ROCKER ARM (Part No.19061-16)

ENGINE ROCKER ARM

from

$621.99
ENGINE ROCKER ARM

Competition Cams – ENGINE ROCKER ARM (Part No.19060-1)

ENGINE ROCKER ARM

from

$59.99
ENGINE ROCKER ARM

Competition Cams – ENGINE ROCKER ARM (Part No.19061-1)

ENGINE ROCKER ARM

from

$48.99
ENGINE ROCKER ARM

Top-Rated Performance Engine Coolant Thermostats for 1981 Pontiac Grand Lemans

Make a smart move for your 1981 Pontiac Grand Lemans with products all priced from $29.49 to $31.99.

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

High Performance 180 Degree Thermostat for Increased Flow

from

$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
See More

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

High Performance Thermostat - 160 Degree Brass & Copper

from

$29.49
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 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
See More

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

High Performance Thermostat

from

$31.99
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 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
See More

Top-Rated Performance Engine Brands For Your 1981 Pontiac Grand Lemans

When it comes to finding the perfect Performance Engine for your 1981 Pontiac Grand Lemans, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 4 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 1981 Pontiac Grand Lemans, providing peace of mind with parts that meet or exceed OEM standards.

Popular Competition Cams 1981 Pontiac Grand Lemans Performance Engines

If you’re looking for a top-quality Performance Engine for your 1981 Pontiac Grand 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 1981 Pontiac Grand 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.
Set of 16 O-Ring Valve Seals for Stock Guide Size, 11/32" Valve Stem
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 1981 Pontiac Grand Lemans Performance Engines

What are the best-selling Performance Engines for 1981 Pontiac Grand Lemans?

Out of 78 Performance Engines that fit 1981 Pontiac Grand Lemans, the following parts are the top sellers:

What’s the price range for 1981 Pontiac Grand Lemans Performance Engines?

The prices of Performance Engines for the 1981 Pontiac Grand 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 1981 Pontiac Grand Lemans?

The average price for Performance Engines for the 1981 Pontiac Grand Lemans is $266.69. 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 Grand Lemans model years?

Yes, we carry Performance Engines for 5 model years of Pontiac Grand Lemans between 1975 and 1980. The following model years are the most popular for Performance Engine purchases: 1980, 1979, 1978, 1977, 1976, and 1975.

What are the cheapest Performance Engines for my 1981 Pontiac Grand Lemans?

Does Advance Auto Parts sell Performance Engines for any other 1981 Pontiac models?

Yes. We stock Performance Engines for 5 other popular 1981 Pontiac models. Some of the most popular are 1981 Grand Prix Performance Engines, 1981 Bonneville Performance Engines, 1981 Firebird Performance Engines, 1981 LeMans Performance Engines, and 1981 Catalina Performance Engines.

What are the top-rated Performance Engines that fit the 1981 Pontiac Grand Lemans?

The one 1981 Pontiac Grand 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 1981 Pontiac Grand Lemans?

As of 11/2/25, these are some of the most in-demand types of Performance Engines for a 1981 Pontiac Grand Lemans:

Can I get help with 1981 Pontiac Grand 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 Grand Lemans Performance Engines?

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