1981 Cadillac Fleetwood Performance Engines

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Keep Your 1981 Cadillac Fleetwood 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 Cadillac Fleetwood looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Performance Camshaft and Lifter Kits, Performance Engine Coolant Thermostats, and Performance Torque Converters. 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. For example, B & M Performance Engines start at just $399.99 with an average 4.3 star rating. With over 22 reviews and a solid 4.9 star average, you can shop with confidence knowing other Cadillac Fleetwood owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1981 Cadillac Fleetwood Performance Engine at Advance Auto Parts is around $545.47, with a range that starts at $31.99 and goes up to $921.99. With 9 options in stock from 4 trusted brands, finding the right fit is easy. Popular picks like B & M Performance Torque Converter For Gm Th400, 350, & 375 Transmissions, 20400, FEL-PRO Performance PERFORMANCE INTAKE MANIFOLD GASKET SET, 1200, and Edelbrock Performer-Plus Camshaft Kit, 5487 start at just $32.99 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 Ignition Products. At Advance Auto Parts, we’re here to help you keep your 1981 Cadillac Fleetwood in peak condition, inside and out.

Essential 1981 Cadillac Fleetwood Performance Engines

FEL-PRO Performance – FEL-PRO Performance Steel core laminate Engine Cylinder Head Gasket, 1004 (Part No.1004)

FEL-PRO Performance Steel core laminate Engine Cylinder Head Gasket, 1004

from

$44.99
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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FEL-PRO Performance – FEL-PRO Performance Steel core laminate Engine Cylinder Head Gasket, 1003 (Part No.1003)

FEL-PRO Performance Steel core laminate Engine Cylinder Head Gasket, 1003

from

$42.49
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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Edelbrock – Edelbrock Complete Top End Cylinder Head Gasket Set, 5.7L for 1992-97 SBC LT1 Engines, 7380 (Part No.7380)

Edelbrock Complete Top End Cylinder Head Gasket Set, 5.7L for 1992-97 SBC LT1 Engines, 7380

from

$109.99
The Edelbrock No: 7380 head gaskets provide the best sealing solution and are matched to Edelbrock cylinder heads for optimal performance. Edelbrock relies on industry leading head gasket manufactures to ensure our head gasket sets will provide the best fit and sealing properties when used with Edelbrock aluminum cylinder heads. Edelbrock head gaskets are manufactured from high-density materials and feature a superior design that performs under pressure and provides a long-lasting seal, without re-torqueing.
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FEL-PRO Performance – FEL-PRO Performance Performance Cylinder Head Gasket, 1000 (Part No.1000)

FEL-PRO Performance Performance Cylinder Head Gasket, 1000

from

$61.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions.
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FEL-PRO Performance – FEL-PRO Performance Performance Cylinder Head Gasket, 1074 (Part No.1074)

FEL-PRO Performance Performance Cylinder Head Gasket, 1074

from

$66.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions.
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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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B & M – B & M Holeshot 2400, 70441 (Part No.70441)

B & M Holeshot 2400, 70441

from

$849.99
This Holeshot 2400 fits all 1998-02 GM Camaro/Firebirds w/LS1 engine, 1999-up GM1500 trucks and SUV’s with 4.8L, 5.3L, or 6.0L engine and 4L60E or 4L65E transmission. This converter retains the lock-up feature. Holeshot torque converters are for serious-minded performance enthusiasts and offer additional strength and durability features not found in our Tork Master or Traveler series of converters. The Holeshot 2400 converter is an excellent choice for vehicles with some performance 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. Holeshot converters feature furnace brazed impeller fins and turbine, new precision alloy impeller hub and new heavy duty needle bearings. Other features include fully balanced and pressure tested by expert technicians. Notes: 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. Higher stall converters can generate more heat, so we highly recommend adding a transmission cooler. This converter is Not recommended for supercharged, plate-type nitrous oxide or trans-brake applications. The product images shown are for illustration purposes only and may not be an exact representation of the product. Will Not fit 1997-05 Corvette. Has both 10.75 and 11.08-inch bolt circles.
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B & M – B & M Tork Master 2400, 20404 (Part No.20404)

B & M Tork Master 2400, 20404

from

$399.99
The Tork Master 2400 fits 1965-91 GM TH400, 425, 375 and 1968-81 GM TH350, 375B (not 350C.) Don’t let the exceptional value fool you into thinking Tork Master Converters are not packed with lots of quality features, making them the best value-priced street performance converters money can buy. These converters perform best when paired with stock to modified engines up to 350hp/350 ft lbs of torque, and lighter weight applications, like street rods. The Tork Master will provide noticeably quicker launches and harder acceleration while maintaining normal daily driving qualities. Upgrades like a new precision alloy steel pump drive tube, needle thrust bearing when factory equipped, new thrust washer between turbine and cover when required, and pressure tested and fully balanced by expertly trained technicians. Notes: Higher stall converters can generate more heat, so we highly recommend adding a transmission cooler. Not recommended for big block, supercharged, plate-type nitrous oxide or trans-brake applications. The product images shown are for illustration purposes only and may not be an exact representation of the product. 10.75-inch bolt circle
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B & M – B & M Torque Converter, Holeshot 2000, 70417 (Part No.70417)

B & M Torque Converter, Holeshot 2000, 70417

from

$675.99
This Holeshot 2000 fits 1984-93 GM 700R4/4L60 w/30 spline input, 1993-1997 4L60E w/30 spline input, and 1997-04 Corvettes. This converter retains the lock-up feature. Holeshot torque converters are for serious-minded performance enthusiasts and offer additional strength and durability features not found in our Tork Master or Traveler series of converters. The Holeshot 2000 converter is an excellent choice for vehicles with some performance 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. Holeshot converters feature furnace-brazed impeller fins and turbine, a new precision alloy impeller hub, and new heavy-duty needle bearings. Other features include fully balanced and pressure tested by expert technicians. If your vehicle is equipped with a plate-type nitrous system or supercharger, please refer to the Nitrous Holeshot line of converters. Notes: 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, and less torque at 2,500 rpm will give you less stall speed than the stall speed ratings indicated. Higher stall converters can generate more heat, so we highly recommend adding a transmission cooler. This converter is Not recommended for supercharged, plate-type nitrous oxide, or trans-brake applications. The product images shown are for illustration purposes only and may not be an exact representation of the product. 10.75-inch bolt circle
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B & M – B & M Tork Master 2400, 70418 (Part No.70418)

B & M Tork Master 2400, 70418

from

$499.99
The Tork Master 2400 fits 1984-93 GM 700R4/4L60 w/30 spline input, 1993-1996 4L60E w/30 spline input transmissions. This converter retains the lock-up feature. Don’t let the exceptional value fool you into thinking Tork Master Converters are not packed with lots of quality features, making them the best value-priced street performance converters money can buy. These converters perform best when paired with stock to modified engines up to 350hp/350 ft lbs of torque, and lighter weight applications, like street rods. The Tork Master will provide noticeably quicker launches and harder acceleration while maintaining normal daily driving qualities. Upgrades like a new precision alloy steel pump drive tube, needle thrust bearing when factory equipped, new thrust washer between turbine and cover when required, and pressure tested and fully balanced by expertly trained technicians. Notes: Higher stall converters can generate more heat, so we highly recommend adding a transmission cooler. Not recommended for big block, supercharged, plate-type nitrous oxide or trans-brake applications. The product images shown are for illustration purposes only and may not be an exact representation of the product. 10.75 in. bolt circle
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B & M – B & M Holeshot 3000, 20413 (Part No.20413)

B & M Holeshot 3000, 20413

from

$921.99
This Holeshot 3000 fits 1965-91 GM TH400, 425, 375 and 1968-81 TH350, 375B (not 350C). Holeshot torque converters are for serious-minded performance enthusiasts and offer additional strength and durability features not found in our Tork Master or Traveler series of converters. The Holeshot 3000 converter is an excellent choice for vehicles with some performance 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. Holeshot converters feature furnace brazed impeller fins and turbine, new precision alloy impeller hub and new heavy duty needle bearings. Other features include fully balanced and pressure tested by expert technicians. If your vehicle is equipped with a plate type nitrous system or supercharger, please refer to the Nitrous Holeshot line of converters. Notes: 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. Higher stall converters can generate more heat, so we highly recommend adding a transmission cooler. This converter is Not recommended for supercharged, plate-type nitrous oxide or trans-brake applications. The product images shown are for illustration purposes only and may not be an exact representation of the product. Has both 10.75 and 11.50-inch bolt circles.
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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.
See More

B & M – B & M Tork Master 3000, 20402 (Part No.20402)

B & M Tork Master 3000, 20402

from

$584.99
The Tork Master 3000 fits 1965-91 GM TH400, 425, 375 and 1968-81 GM TH350, 375B (not 350C) transmissions. Don’t let the exceptional value fool you into thinking Tork Master Converters are not packed with lots of quality features, making them the best value-priced street performance converters money can buy. These converters perform best when paired with stock to modified engines up to 350hp/350 ft lbs of torque, and lighter weight applications, like street rods. The Tork Master will provide noticeably quicker launches and harder acceleration while maintaining normal daily driving qualities. Upgrades like a new precision alloy steel pump drive tube, needle thrust bearing when factory equipped, new thrust washer between turbine and cover when required, and pressure tested and fully balanced by expertly trained technicians. Notes: Higher stall converters can generate more heat, so we highly recommend adding a transmission cooler. Not recommended for big block, supercharged, plate-type nitrous oxide or trans-brake applications. The product images shown are for illustration purposes only and may not be an exact representation of the product. 10.75-inch bolt circle
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Competition Cams – Competition Cams Xtreme Energy 218/224 Hydraulic Roller Cam For Gm Lt1/Lt4, 07-502-8 (Part No.07-502-8)

Competition Cams Xtreme Energy 218/224 Hydraulic Roller Cam For Gm Lt1/Lt4, 07-502-8

from

$577.99
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 drivability and creature comforts, the Xtreme Energy grind family offers gains in torque and horsepower while still delivering adequate vacuum for power brakes and other vacuum dependent accessories. Xtreme Energy camshafts work great in carbureted applications, but offer the best performance with aftermarket intake manifolds, lower gear ratios, headers and free flowing exhaust.
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Competition Cams – Competition Cams XE Computer Control 206/212 Hydraulic Flat Cam/Lifter Kit, CL12-249-4 (Part No.CL12-249-4)

Competition Cams XE Computer Control 206/212 Hydraulic Flat Cam/Lifter Kit, CL12-249-4

from

$397.99
SMALL BLOCK CHEVY HYDRAULIC CAM AND LIFTER KIT – Xtreme Energy Computer Controlled: Great in throttle body, crossfire or carbureted engine and 305 TPI.
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Edelbrock – Edelbrock Performer-Plus Camshaft Kit for 1976-95 Small Block Chevrolet, 3702 (Part No.3702)

Edelbrock Performer-Plus Camshaft Kit for 1976-95 Small Block Chevrolet, 3702

from

$322.99
“Edelbrock part No: 3702 Performer-Plus camshaft is designed for small-block Chevy 305-350 T.B.I & LG-4 V-8 applications. This Edelbrock cam kit produced 245 ft-lbs. of torque when used with No: 3701 intake and stock iron cylinder heads on a 350 engine. The camshaft will produce optimum torque from the low-end to the mid-range, Performer-Plus camshafts match with Performer manifolds for vehicles operating from off-idle to 5500 rpm. This Performer-Plus is a smooth idling cam for daily drivers, trucks, vans, RVs and 4x4s. You can expect a major improvement in throttle response and torque. All camshafts include flat tappet lifters, assembly lube and instructions. Camshaft Specifications: – Duration at .050 Intake: 194 degrees – Duration at .050 Exhaust: 214 degrees – Lift at Valve Intake: .398″” – Lift at Valve Exhaust: .442″” – Lobe Separation: 112 Degrees – Intake Centerline: 107 Degrees – Idle Vacuum at 1000 RPM’s: 16″””
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Competition Cams – Competition Cams Xtreme Marine 218/224 Hydraulic Roller Cam For Oe Roller Sbc, 08-417-8 (Part No.08-417-8)

Competition Cams Xtreme Marine 218/224 Hydraulic Roller Cam For Oe Roller Sbc, 08-417-8

from

$577.99
The most recent advancements in camshaft engineering are utilized by COMP Cams Xtreme Marine camshafts. Compared to cams of the same duration at.050 in., their aggressive lobe shape increases engine suction and yields superior throttle response and top-end horsepower. You can always experience Xtreme performance on the water with these cams, which are suitable for both race and leisure boat applications. COMP Cams provides camshafts for your watercraft that date back to the 1950s, ranging from hydraulic and mechanical to flat and roller tappet.
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Competition Cams – Competition Cams Xtreme Energy 224/230 Hydraulic Roller Cam For Gm Lt1/Lt4, 07-503-8 (Part No.07-503-8)

Competition Cams Xtreme Energy 224/230 Hydraulic Roller Cam For Gm Lt1/Lt4, 07-503-8

from

$577.99
The newest cam technology is used in COMP Cams Xtreme Energy camshafts to deliver optimal performance. There is an Xtreme Energy cam for every use, including off-roading, towing, and street performance. These cams outperform comparable cams from other manufacturers in terms of throttle responsiveness and top-end horsepower because to their aggressive lobe profile, which also increases engine vacuum. There are hundreds of versions that can be installed on cars made between 1955 and the present. Choose the cam made specifically for your use case.
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Competition Cams – Competition Cams Magnum 224/224 Hydraulic Flat Cam, 12-211-2 (Part No.12-211-2)

Competition Cams Magnum 224/224 Hydraulic Flat Cam, 12-211-2

from

$293.99
HYDRAULIC – Magnum: High performance. Biggest cam with stock converter but better with 2000+ stall. Use lower gears. Mild rough idle.
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Competition Cams – Competition Cams Xtreme Energy 206/212 Hydraulic Flat Cam and Lifter Kit, CL12-230-2 (Part No.CL12-230-2)

Competition Cams Xtreme Energy 206/212 Hydraulic Flat Cam and Lifter Kit, CL12-230-2

from

$305.99
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.
See More

FEL-PRO Performance – FEL-PRO Performance PERFORMANCE INTAKE MANIFOLD GASKET SET, 1200 (Part No.1200)

FEL-PRO Performance PERFORMANCE INTAKE MANIFOLD GASKET SET, 1200

from

$32.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions
See More

FEL-PRO Performance – FEL-PRO Performance PERFORMANCE INTAKE MANIFOLD GASKET SET, 1284 (Part No.1284)

FEL-PRO Performance PERFORMANCE INTAKE MANIFOLD GASKET SET, 1284

from

$31.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions
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Edelbrock – Edelbrock Intake Manifold Gasket, 7243 (Part No.7243)

Edelbrock Intake Manifold Gasket, 7243

from

$31.99
Edelbrock part No: 7243 Intake Gaskets for 1992-1997 LT1 Small-Block Chevys 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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Most Popular Performance Camshaft and Lifter Kit for 1981 Cadillac Fleetwoods

Enhance your 1981 Cadillac Fleetwood with this popular Performance Camshaft and Lifter Kit we have in stock, for $406.99.

Edelbrock – Edelbrock Performer-Plus Camshaft Kit, 5487 (Part No.5487)

Edelbrock Performer-Plus Camshaft Kit, 5487

from

$406.99
“Edelbrock part No: 5487 Performer-Plus camshaft is designed for Buick 321-252 Even Fire V-6 applications. The camshaft will produce optimum torque from the low-end to the mid-range, Performer-Plus camshafts match with Performer manifolds for vehicles operating from off-idle to 5500 rpm. This Performer-Plus is a smooth idling cam for daily drivers, trucks, vans, RVs and 4x4s. You can expect a major improvement in throttle response and torque. All camshafts include flat tappet lifters, assembly lube and instructions. Camshaft Specifications: – Duration at .050 Intake: 204 degrees – Duration at .050 Exhaust: 214 degrees – Lift at Valve Intake: .448″” – Lift at Valve Exhaust: .472″” – Lobe Separation: 112 Degrees – Intake Centerline: 107 Degrees – Idle Vacuum at 1000 RPM’s: 15″””
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Best-Selling 1981 Cadillac Fleetwood Performance Engine Coolant Thermostat

Upgrade your Fleetwood 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 Torque Converters for 1981 Cadillac Fleetwoods

Choose a high-quality OEM or aftermarket Performance Torque Converter for Cadillac Fleetwoods and enjoy top-notch performance from $349.99.

B & M – B & M Tork Master 3000, 20402 (Part No.20402)

B & M Tork Master 3000, 20402

from

$584.99
The Tork Master 3000 fits 1965-91 GM TH400, 425, 375 and 1968-81 GM TH350, 375B (not 350C) transmissions. Don’t let the exceptional value fool you into thinking Tork Master Converters are not packed with lots of quality features, making them the best value-priced street performance converters money can buy. These converters perform best when paired with stock to modified engines up to 350hp/350 ft lbs of torque, and lighter weight applications, like street rods. The Tork Master will provide noticeably quicker launches and harder acceleration while maintaining normal daily driving qualities. Upgrades like a new precision alloy steel pump drive tube, needle thrust bearing when factory equipped, new thrust washer between turbine and cover when required, and pressure tested and fully balanced by expertly trained technicians. Notes: Higher stall converters can generate more heat, so we highly recommend adding a transmission cooler. Not recommended for big block, supercharged, plate-type nitrous oxide or trans-brake applications. The product images shown are for illustration purposes only and may not be an exact representation of the product. 10.75-inch bolt circle
See More

B & M – B & M Tork Master 2400, 20404 (Part No.20404)

B & M Tork Master 2400, 20404

from

$399.99
The Tork Master 2400 fits 1965-91 GM TH400, 425, 375 and 1968-81 GM TH350, 375B (not 350C.) Don’t let the exceptional value fool you into thinking Tork Master Converters are not packed with lots of quality features, making them the best value-priced street performance converters money can buy. These converters perform best when paired with stock to modified engines up to 350hp/350 ft lbs of torque, and lighter weight applications, like street rods. The Tork Master will provide noticeably quicker launches and harder acceleration while maintaining normal daily driving qualities. Upgrades like a new precision alloy steel pump drive tube, needle thrust bearing when factory equipped, new thrust washer between turbine and cover when required, and pressure tested and fully balanced by expertly trained technicians. Notes: Higher stall converters can generate more heat, so we highly recommend adding a transmission cooler. Not recommended for big block, supercharged, plate-type nitrous oxide or trans-brake applications. The product images shown are for illustration purposes only and may not be an exact representation of the product. 10.75-inch bolt circle
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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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B & M – B & M Holeshot 3000, 20413 (Part No.20413)

B & M Holeshot 3000, 20413

from

$921.99
This Holeshot 3000 fits 1965-91 GM TH400, 425, 375 and 1968-81 TH350, 375B (not 350C). Holeshot torque converters are for serious-minded performance enthusiasts and offer additional strength and durability features not found in our Tork Master or Traveler series of converters. The Holeshot 3000 converter is an excellent choice for vehicles with some performance 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. Holeshot converters feature furnace brazed impeller fins and turbine, new precision alloy impeller hub and new heavy duty needle bearings. Other features include fully balanced and pressure tested by expert technicians. If your vehicle is equipped with a plate type nitrous system or supercharger, please refer to the Nitrous Holeshot line of converters. Notes: 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. Higher stall converters can generate more heat, so we highly recommend adding a transmission cooler. This converter is Not recommended for supercharged, plate-type nitrous oxide or trans-brake applications. The product images shown are for illustration purposes only and may not be an exact representation of the product. Has both 10.75 and 11.50-inch bolt circles.
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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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Our Top Pick for a 1981 Cadillac Fleetwood Performance Engine Cylinder Head Gasket

Invest in a durable Performance Engine Cylinder Head Gasket for your 1981 Cadillac, knowing you’re getting trusted brands and expert craftsmanship.

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

FEL-PRO Performance Performance Cylinder Head Gasket, 1000

from

$61.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions.
See More

Our Performance Engine Intake Manifold Gaskets for 1981 Cadillac Fleetwoods

Make a smart move for your 1981 Cadillac Fleetwood with our Performance Engine Intake Manifold Gasket for $32.99.

FEL-PRO Performance – FEL-PRO Performance PERFORMANCE INTAKE MANIFOLD GASKET SET, 1200 (Part No.1200)

FEL-PRO Performance PERFORMANCE INTAKE MANIFOLD GASKET SET, 1200

from

$32.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions
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Top-Rated Performance Engine Brands For Your 1981 Cadillac Fleetwood

When it comes to finding the perfect Performance Engine for your 1981 Cadillac Fleetwood, 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 B & M, and more, all known for their exceptional customer ratings (average brand rating of 4.3 stars) and competitive prices, as low as $399.99. Purchasing a Performance Engine from us here at Advance Auto Parts is a smart move for both you and your 1981 Cadillac Fleetwood, providing peace of mind with parts that meet or exceed OEM standards.

Popular B & M 1981 Cadillac Fleetwood Performance Engines

If you’re looking for a top-quality Performance Engine for your 1981 Cadillac Fleetwood, 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 1981 Cadillac Fleetwood 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 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. ”
B & M Tork Master 3000, 20402
from $584.99
(1)
B & M Tork Master 3000, 20402
“good parts and very strong”

FAQs for 1981 Cadillac Fleetwood Performance Engines

What are the best-selling Performance Engines for 1981 Cadillac Fleetwoods?

Out of 9 Performance Engines that fit 1981 Cadillac Fleetwoods, the following parts are the top sellers:

What’s the price range for 1981 Cadillac Fleetwood Performance Engines?

The prices of Performance Engines for the 1981 Cadillac Fleetwood range from $31.99 up to $921.99 for the most premium parts.

What is the average price of a Performance Engine for a 1981 Cadillac Fleetwood?

The average price for Performance Engines for the 1981 Cadillac Fleetwood is $545.47. 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 Cadillac Fleetwood model years?

Yes, we carry Performance Engines for 29 model years of Cadillac Fleetwoods between 1965 and 1996. The following model years are the most popular for Performance Engine purchases: 1996, 1995, 1994, 1993, 1989, 1988, 1987, 1986, and 1984.

What are the cheapest Performance Engines for my 1981 Cadillac Fleetwood?

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

Yes. We stock Performance Engines for 3 other popular 1981 Cadillac models. Some of the most popular are 1981 DeVille Performance Engines, 1981 Eldorado Performance Engines, 1981 Seville Performance Engines, and 1981 Commercial Chassis Performance Engines.

What are the top-rated Performance Engines that fit the 1981 Cadillac Fleetwood?

The one 1981 Cadillac Fleetwood Performance Engine we have in stock is the Mr. Gasket High Performance Thermostat – 160 Degree Brass & Copper, 4363. It is rated 4 stars and costs $31.99.

What types of Performance Engines do you sell for my 1981 Cadillac Fleetwood?

As of 8/2/26, these are some of the most in-demand types of Performance Engines for a 1981 Cadillac Fleetwood:

Can I get help with 1981 Cadillac Fleetwood Performance Engine orders?

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

What is your return policy for Cadillac Fleetwood Performance Engines?

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