1973 Pontiac LeMans Performance Engines

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Keep Your 1973 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 1973 Pontiac LeMans looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Performance Engine Cylinder Head Gaskets, Performance Engine Coolant Thermostats, and Performance Intake Manifolds. 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 B & M and Competition Cams. For example, B & M Performance Engines start at just $399.99 with an average 4.3 star rating. Competition Cams offer similar pricing and quality, backed by strong customer feedback. With over 882 reviews and a solid 4.5 star average, you can shop with confidence knowing other Pontiac LeMans owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1973 Pontiac LeMans Performance Engine at Advance Auto Parts is around $357.00, with a range that starts at $11.99 and goes up to $1,210.99. With 74 options in stock from 5 trusted brands, finding the right fit is easy. Popular picks like Mr. Gasket High Performance Thermostat – 160 Degree Brass & Copper, 4363, Mr. Gasket O-Ring Style Chrome Water Neck, 2557, and FEL-PRO Performance PERFORMANCE INTAKE MANIFOLD GASKET SET, 1233 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 Air Filters and Performance Fuel Systems. At Advance Auto Parts, we’re here to help you keep your 1973 Pontiac LeMans in peak condition, inside and out.

Essential 1973 Pontiac LeMans Performance Engines

Edelbrock – Edelbrock Water Pump Cartridge for Small-Block Chevy (Race Style), 8827 (Part No.8827)

Edelbrock Water Pump Cartridge for Small-Block Chevy (Race Style), 8827

from

$469.99
Edelbrock Water Pump Cartridge for Small-Block Chevy (Race Style), 8827.
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Weiand – Weiand Stealth Ram Intake Manifold, 7540 (Part No.7540)

Weiand Stealth Ram Intake Manifold, 7540

from

$849.99
Weiand Stealth Ram Intake Manifold, 7540.
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Mr. Gasket – Mr. Gasket Intake Gasket, 143 (Part No.143)

Mr. Gasket Intake Gasket, 143

from

$51.99
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.
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Mr. Gasket – Mr. Gasket High Performance Thermostat – 160 Degree Brass & Copper, 4363 (Part No.4363)

Mr. Gasket High Performance Thermostat - 160 Degree Brass & Copper, 4363

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.
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Competition Cams – Competition Cams Thumpr 227/241 Hydraulic Flat Cam and Lifter Kit, CL51-600-5 (Part No.CL51-600-5)

Competition Cams Thumpr 227/241 Hydraulic Flat Cam and Lifter Kit, CL51-600-5

from

$451.99
Designed to deliver an aggressive, hard-hitting exhaust note at idle, the Thumpr camshaft series from COMP Cams also delivers excellent horsepower gains and a broad torque curve. A perfect choice for muscle cars and street rods.
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FEL-PRO Performance – FEL-PRO Performance PERFORMANCE VALVE COVER GASKET SET, 1640 (Part No.1640)

FEL-PRO Performance PERFORMANCE VALVE COVER GASKET SET, 1640

from

$22.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions
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Mr. Gasket – Mr. Gasket Head Gasket, 1134G (Part No.1134G)

Mr. Gasket Head Gasket, 1134G

from

$73.99
Mr. Gasket Ultra-Seal Head Gaskets are a five layer (graphite core/perforated steel outer layers) composite construction. The graphite core has excellent thermo conductivity (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. Gasket bore 4.100 inch, Compressed thickness 0.028 inch
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Competition Cams – Competition Cams Xtreme Energy 218/224 Hydraulic Flat Cam K-Kit, K42-222-4 (Part No.K42-222-4)

Competition Cams Xtreme Energy 218/224 Hydraulic Flat Cam K-Kit, K42-222-4

from

$597.99
Featuring a quicker valve opening, the Xtreme Energy camshaft profile provides increased responsiveness and more area under the lift curve than older, slower grinds. Designed to increase performance without sacrificing driveability and creature comforts.
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FEL-PRO Performance – FEL-PRO Performance PERFORMANCE OIL PAN GASKET SET, 1814 (Part No.1814)

FEL-PRO Performance PERFORMANCE OIL PAN GASKET SET, 1814

from

$30.49
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions
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FEL-PRO Performance – FEL-PRO Performance Engine Oil Pan Gasket Set Rubber-coated fiber, 1803 (Part No.1803)

FEL-PRO Performance Engine Oil Pan Gasket Set Rubber-coated fiber, 1803

from

$26.99
Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
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Competition Cams – Competition Cams High Energy Timing Set, 3200 (Part No.3200)

Competition Cams High Energy Timing Set, 3200

from

$66.99
COMP Cams High Energy Timing Chain Sets include precision cast iron camshaft and crank gear sprockets and premium quality link belt type timing chain. These sets exceed all original equipment timing chain specifications and are ideal for stock replacement and mild performance applications.
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Competition Cams – Competition Cams TIMING SET, HIGH TECH SMALL BLOCK CHEVY 1 EA, 3100 (Part No.3100)

Competition Cams TIMING SET, HIGH TECH SMALL BLOCK CHEVY 1 EA, 3100

from

$88.99
COMP Cams Hi-Tech Roller Race Timing Sets include cast iron camshafts gears, induction hardened billet steel crank sprockets, and pre-stretched, heat-treated double roller chains with heavy-duty large pin design. They feature 3 keyway crank sprockets for 4° incremental adjustability with 4° maximum advance or retard. These timing sets are dynamically balanced and quality checked for run-out tolerances.
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Mr. Gasket – Mr. Gasket Rear Main Seal Gasket, 1960 (Part No.1960)

Mr. Gasket Rear Main Seal Gasket, 1960

from

$29.39
This Mr. Gasket Rear Main Seal is made from silicone to allow the seal to handle extreme engine oil temperature. It also provides for an upgrade for that leaky rope style seal and is a direct replacement for a rubber main seal. It’s also injection molded for a precise fit.
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FEL-PRO Performance – FEL-PRO Performance Engine Crankshaft Seal Kit, 2912 (Part No.2912)

FEL-PRO Performance Engine Crankshaft Seal Kit, 2912

from

$38.99
Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
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Competition Cams – "Competition Cams Valve Seals, Umbrella 11/32"" 1 St, 502-16" (Part No.502-16)

"Competition Cams Valve Seals, Umbrella 11/32"" 1 St, 502-16"

from

$20.99
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.
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Competition Cams – Competition Cams Valve Seals, 503-16 (Part No.503-16)

Competition Cams Valve Seals, 503-16

from

$223.99
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.
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Competition Cams – Competition Cams Thumpr 227/241 Hydraulic Flat Cam, 51-600-5 (Part No.51-600-5)

Competition Cams Thumpr 227/241 Hydraulic Flat Cam, 51-600-5

from

$325.99
Designed to deliver an aggressive, hard-hitting exhaust note at idle, the Thumpr camshaft series from COMP Cams also delivers excellent horsepower gains and a broad torque curve. A perfect choice for muscle cars and street rods.
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Competition Cams – Competition Cams Xtreme Energy 224/230 Hydraulic Flat Cam, 42-223-4 (Part No.42-223-4)

Competition Cams Xtreme Energy 224/230 Hydraulic Flat Cam, 42-223-4

from

$309.99
Featuring a quicker valve opening, the Xtreme Energy camshaft profile provides increased responsiveness and more area under the lift curve than older, slower grinds. Designed to increase performance without sacrificing driveability and creature comforts,
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Edelbrock – Edelbrock Performer-Link Adjustable True-Roller Timing Chain Set, 7800 (Part No.7800)

Edelbrock Performer-Link Adjustable True-Roller Timing Chain Set, 7800

from

$66.99
Edelbrock Part No: 7800 Performer-Link timing chain is for use with Edelbrock or stock cams. They have a solid-bushing chain for a true bearing surface that rolls with the sprockets, eliminating chain stretch. Cam sprockets are made from 35,000 psi tensile strength cast iron. Crank sprockets are made from billet SAE-1144 steel and induction heat treated. Four Performer-Link sets are stock replacement parts and 50-state legal (see listings in bold type). All other sets have three keyway setting points to ensure accurate timing selection for early or late-model vehicles. Performer-Link timing sets are not for use above 6500 rpm. Performer roller chain sets are engineered to operate up to 6500 rpm. Never hammer directly on chain or sprockets. You can crack the hardened links and pins and cause early failures. Use a sleeve for installations that require hammering, a brass drift punch may be used if you carefully alternate blows on either side of the sprocket to avoid cocking. Never stretch the chain with a screwdriver. Check for clearance between the timing chain and block and between the chain and front cover before reassembly. Be sure that both cam and crank sprockets are exactly in line with each other. Misalignment can cause chain to break.
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Competition Cams – Competition Cams High Energy Timing Set for ’62-’77 B.O.P. 198-231 V6, 3215 (Part No.3215)

Competition Cams High Energy Timing Set for '62-'77 B.O.P. 198-231 V6, 3215

from

$55.99
Competition Cams High Energy Timing Set for ’62-’77 B.O.P. 198-231 V6, 3215.
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Mr. Gasket – Mr. Gasket O-Ring Style Chrome Water Neck, 2557 (Part No.2557)

Mr. Gasket O-Ring Style Chrome Water Neck, 2557

from

$33.59
Precision die cast, these water necks are first polished to a high luster, then chrome plated. Features an O-ring style seal to prevent water leaks. Comes with O-ring gasket and mounting bolts.
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Weiand – Weiand Supercharger Accessories, 7134P (Part No.7134P)

Weiand Supercharger Accessories, 7134P

from

$224.99
Weiand Supercharger Accessories, 7134P.
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Competition Cams – Competition Cams MAGNUM ROLLER ROCKERS, SMALL BLOCK CHEVY 1.52 1 ST, 1412-16 (Part No.1412-16)

Competition Cams MAGNUM ROLLER ROCKERS, SMALL BLOCK CHEVY 1.52 1 ST, 1412-16

from

$217.99
“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 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.”
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Competition Cams – "Competition Cams Magnum Roller Rocker Arms for Ford 3/8"" Stud, 1.6 Ratio, 1431-16" (Part No.1431-16)

"Competition Cams Magnum Roller Rocker Arms for Ford 3/8"" Stud, 1.6 Ratio, 1431-16"

from

$239.99
“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.”
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B & M – B & M Torque Converter, Nitrous Holeshot 3600, 20482 (Part No.20482)

B & M Torque Converter, Nitrous Holeshot 3600, 20482

from

$799.99
B&M Nitrous HoleShot 3600 stall for 1965-91 TH400, 425 and 1968-81 TH350, 375 (Not TH350C) transmissions is an excellent choice for vehicles with engine modifications, particularly big cams that tend to reduce low end power and torque. The higher stall speed of this converter will launch the car in a higher rpm range where more torque is readily available, resulting in quicker acceleration. Nitrous Holeshot converters feature furnace brazed impeller and turbine, new precision steel alloy pump drive tube, new heavy duty needle bearings between the stator and impeller (not a thrust washer) and needle bearings between the stator and turbine. Other features include dual pattern 10.75 and 11.50-inch bolt circle, a new turbine hub, new springs and rollers in the stator and anti-balloon plates. The anti-balloon plates will allow these converters to stand up to the instant horsepower that a nitrous plate system delivers. 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. These are serious converters for serious performance street cars. To prevent contamination left from worn parts being circulated in your new components causing premature wear, we strongly recommend protecting your investment by adding a B&M transmission cooler with all new transmission installations. Listed converters are NOT to be used in trans-brake applications. Not for use in trans-brake applications.
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B & M – B & M Performance Torque Converter For Gm Th400, 350, & 375 Transmissions, 20400 (Part No.20400)

B & M Performance Torque Converter For Gm Th400, 350, & 375 Transmissions, 20400

from

$349.99
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 performance torque converter. The Tork Master is an excellent all-around performance street converter. The best value priced street converters available, Tork Master converters come with a new precision pump drive tube and all are pressure tested and fully balanced. The Tork Master torque converter is not recommended for big block or supercharged applications. New alloy steel pump drive tube. Needle thrust bearing when factory equipped. New thrust washer between turbine and cover when required. Due to torque converter core availability, the actual converter size may vary but performance functionality will be as advertised.
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Competition Cams – "Competition Cams Valve Spring, 1.384"" 2 Spring, 988-1" (Part No.988-1)

"Competition Cams Valve Spring, 1.384"" 2 Spring, 988-1"

from

$11.99
“Competition Cams Valve Spring, 1.384″” 2 Spring, 988-1. ”
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Competition Cams – "Competition Cams Valve Springs, 1.250"" Single 1 St, 981-16" (Part No.981-16)

"Competition Cams Valve Springs, 1.250"" Single 1 St, 981-16"

from

$111.99
Single Outer Valve Springs from COMP Cams allow you to build the perfect spring assembly for your application. The valve spring creation process is far more involved than most people realize. Selecting the right metal stock and creating the best design is not done by chance. COMP Cams has developed a process that creates the highest quality valve spring available. The result is a product that meets and exceeds the expectations of today’s engine builders and racers.
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Most Popular Performance Engine Cylinder Head Gaskets for 1973 Pontiac LeMans

Enhance your 1973 Pontiac LeMans with one of the 4 Performance Engine Cylinder Head Gaskets we have in stock, starting at just $54.99.

FEL-PRO Performance – FEL-PRO Performance Performance Cylinder Head Gasket, 1025 (Part No.1025)

FEL-PRO Performance Performance Cylinder Head Gasket, 1025

from

$74.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions.
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Edelbrock – "Edelbrock Cylinder Head Gasket Set for Pontiac, 4.20"" bore size, 7381" (Part No.7381)

"Edelbrock Cylinder Head Gasket Set for Pontiac, 4.20"" bore size, 7381"

from

$58.99
“Edelbrock part No: 7381 head gasket is intended for Pontiac engines 1961-1976, 326-389-421-428-455 engine sizes. This gasket comes as a set and has a 4.200″” bore size, 0.038″” compressed thickness and 8.96 cc volume.”
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FEL-PRO Performance – FEL-PRO Performance Performance Cylinder Head Gasket, 1016 (Part No.1016)

FEL-PRO Performance Performance Cylinder Head Gasket, 1016

from

$54.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions.
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Mr. Gasket – Mr. Gasket Ultra Seal: Head Gasket, 5801G (Part No.5801G)

Mr. Gasket Ultra Seal: Head Gasket, 5801G

from

$79.09
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 4.190 inch, Compressed thickness 0.038 inch.
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Best-Selling 1973 Pontiac LeMans Performance Engine Coolant Thermostat

Upgrade your LeMans with our best-selling Performance Engine Coolant Thermostat with a 4 Starts rating across 12 reviews.

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

Mr. Gasket High Performance Thermostat - 160 Degree Brass & Copper, 4363

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.
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Top-Quality Performance Intake Manifolds for 1973 Pontiac LeMans

Choose a high-quality OEM or aftermarket Performance Intake Manifold for Pontiac LeMans and enjoy top-notch performance from $430.99.

Edelbrock – Edelbrock Performer Intake Manifold for 1965-79 Pontiac 326-455 Non-EGR, 2156 (Part No.2156)

Edelbrock Performer Intake Manifold for 1965-79 Pontiac 326-455 Non-EGR, 2156

from

$430.99
Edelbrock Performer Intake Manifold for 1965-79 Pontiac 326-455 Non-EGR, 2156.
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Edelbrock – Edelbrock Performer Intake Manifold for 1965-79 Pontiac 326-455 Non-EGR, Polished Finish, 21561 (Part No.21561)

Edelbrock Performer Intake Manifold for 1965-79 Pontiac 326-455 Non-EGR, Polished Finish, 21561

from

$754.99
Edelbrock Performer Intake Manifold for 1965-79 Pontiac 326-455 Non-EGR, Polished Finish, 21561.
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Edelbrock – Edelbrock C-357-B Triple-Deuce Manifold for S/B Chevy 4-Bolt Carb Pattern, 5419 (Part No.5419)

Edelbrock C-357-B Triple-Deuce Manifold for S/B Chevy 4-Bolt Carb Pattern, 5419

from

$545.99
Edelbrock C-357-B Triple-Deuce Manifold for S/B Chevy 4-Bolt Carb Pattern, 5419.
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Edelbrock – Edelbrock C-357-B Triple-Deuce Intake Manifold for 1955-86 262-400 c.i.d. SB Chevys, 5418 (Part No.5418)

Edelbrock C-357-B Triple-Deuce Intake Manifold for 1955-86 262-400 c.i.d. SB Chevys, 5418

from

$545.99
Edelbrock C-357-B Triple-Deuce Intake Manifold for 1955-86 262-400 c.i.d. SB Chevys, 5418.
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Top Picks for 1973 Pontiac LeMans Performance Engine Intake Manifold Gaskets

Invest in one of our 2 durable Performance Engine Intake Manifold Gaskets for your 1973 Pontiac, knowing you’re getting trusted brands and expert craftsmanship.

FEL-PRO Performance – FEL-PRO Performance PERFORMANCE INTAKE MANIFOLD GASKET SET, 1233 (Part No.1233)

FEL-PRO Performance PERFORMANCE INTAKE MANIFOLD GASKET SET, 1233

from

$34.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions
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Edelbrock – Edelbrock Intake Manifold Gasket, 7280 (Part No.7280)

Edelbrock Intake Manifold Gasket, 7280

from

$30.99
Edelbrock part No: 7280 Intake Gaskets for 1961-79 3626-389-400-421-428-455 Pontiac engines allow for optimum flow and performance. Any gasket can create a seal, but a good gasket can do it with less clamping force, and for a longer period of time. The new MP-2N Micropore technology does not use solvents making our gaskets environmentally friendly. Impervious to most chemicals, this synthetic fiber composite provides a high recovery under load. This means that when compressed, the gasket will conform to any imperfections on the sealing surface even using lower flange pressures. A nitrile bead around each port opening makes the seal even better.
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Our Performance Water Outlets for 1973 Pontiac LeMans

Make a smart move for your 1973 Pontiac LeMans with our Performance Water Outlet for $33.59.

Mr. Gasket – Mr. Gasket O-Ring Style Chrome Water Neck, 2557 (Part No.2557)

Mr. Gasket O-Ring Style Chrome Water Neck, 2557

from

$33.59
Precision die cast, these water necks are first polished to a high luster, then chrome plated. Features an O-ring style seal to prevent water leaks. Comes with O-ring gasket and mounting bolts.
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Top-Rated Performance Engine Brands For Your 1973 Pontiac LeMans

When it comes to finding the perfect Performance Engine for your 1973 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 B & M and Competition Cams, and more, all known for their exceptional customer ratings (average brand rating of 4.3 stars) and competitive prices, as low as $397.99. Purchasing a Performance Engine from us here at Advance Auto Parts is a smart move for both you and your 1973 Pontiac LeMans, providing peace of mind with parts that meet or exceed OEM standards.

Popular B & M 1973 Pontiac LeMans Performance Engines

If you’re looking for a top-quality Performance Engine for your 1973 Pontiac LeMans, Advance Auto Parts has exactly what you need with our selection of B & M Performance Engines. We have 2 B & M Performance Engines in stock for this fitment, all known for their durability and precision fit. With prices starting at just $399.99 and an average cost of $492.49, you’ll find the perfect Performance Engine for your needs and budget. B & M Performance Engines for the 1973 Pontiac LeMans come highly rated, with over 2 customer reviews and an impressive average rating of 4.3 stars. Choosing a B & M Performance Engine from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
B & M Tork Master 3000, 20402
from $584.99
(1)
B & M Tork Master 3000, 20402
“good parts and very strong”
B & M Tork Master 2400, 20404
from $399.99
(1)
B & M Tork Master 2400, 20404
“The B&M 2400 stall converter was a great choice for my application. It works well on the street and track, increased performance by leaps and bounds. ”

Top-Quality Competition Cams 1973 Pontiac LeMans Performance Engines

For those in search of a high-quality Performance Engine for their 1973 Pontiac LeMans, Advance Auto Parts offers a great selection of Competition Cams Performance Engines. With 2 Competition Cams Performance Engines in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Performance Engines start at just $397.99, with an average price of $648.49, giving you a range of options to suit your budget. Backed by over 14 customer ratings and an average rating of 4.0 stars, Competition Cams Performance Engines provide both reliability and excellent performance. Choosing a Competition Cams Performance Engine from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
Competition Cams Big Mutha' Thumpr 243/257 Hydraulic Flat Cam/Lifter Kit, CL12-602-4
from $397.99
(13)
Competition Cams Big Mutha’ Thumpr 243/257 Hydraulic Flat Cam/Lifter Kit, CL12-602-4
“Worked prefect. Gave me the Hi speed blower back”
Competition Cams High Energy/Marine 218/218 Hydraulic Flat Cam/Lifter Kit, CL12-210-2
from $898.99
(1)
Competition Cams High Energy/Marine 218/218 Hydraulic Flat Cam/Lifter Kit, CL12-210-2
“nearly identical match for the original part”

FAQs for 1973 Pontiac LeMans Performance Engines

What are the best-selling Performance Engines for 1973 Pontiac LeMans?

Out of 74 Performance Engines that fit 1973 Pontiac LeMans, the following parts are the top sellers:

What’s the price range for 1973 Pontiac LeMans Performance Engines?

The prices of Performance Engines for the 1973 Pontiac LeMans range from $11.99 up to $1,210.99 for the most premium parts.

What is the average price of a Performance Engine for a 1973 Pontiac LeMans?

The average price for Performance Engines for the 1973 Pontiac LeMans is $357.00. 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 1972.

What are the cheapest Performance Engines for my 1973 Pontiac LeMans?

The cheapest 1973 Pontiac LeMans Performance Engines we carry are:

Does Advance Auto Parts sell Performance Engines for any other 1973 Pontiac models?

Yes. We stock Performance Engines for 8 other popular 1973 Pontiac models. Some of the most popular are 1973 Grand Prix Performance Engines, 1973 Bonneville Performance Engines, 1973 Firebird Performance Engines, 1973 Grand Am Performance Engines, and 1973 GTO Performance Engines.

What are the top-rated Performance Engines that fit the 1973 Pontiac LeMans?

The one 1973 Pontiac LeMans Performance Engine we have in stock is the "Competition Cams Valve Spring, 1.384"" 2 Spring, 988-1". It costs $11.99.

What types of Performance Engines do you sell for my 1973 Pontiac LeMans?

As of 8/2/26, these are some of the most in-demand types of Performance Engines for a 1973 Pontiac LeMans:

Can I get help with 1973 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.