1981 Jeep J20 Performance Engines

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Keep Your 1981 Jeep J20 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 Jeep J20 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Performance Engine Water Pumps, Performance Engine Cylinder Head Gaskets, and Performance Engine Push Rods. 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.

Competitive Prices and Extensive Inventory

The average price for a 1981 Jeep J20 Performance Engine at Advance Auto Parts is around $303.99, with a range that starts at $31.99 and goes up to $1,544.99. With 12 options in stock from 4 trusted brands, finding the right fit is easy. Popular picks like "Competition Cams SUPER VALVE LOCKS, 3/8"" 1 ST, 612-16", Edelbrock Performer-Link Adjustable True-Roller Timing Chain Set, 7818, and Competition Cams High Energy Timing Set for ’69-’81 AMC 290-401 V8, 3218 start at just $43.99 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 Oil Filters. At Advance Auto Parts, we’re here to help you keep your 1981 Jeep J20 in peak condition, inside and out.

Essential 1981 Jeep J20 Performance Engines

Edelbrock – Edelbrock Pushrod Set, 9637 (Part No.9637)

Edelbrock Pushrod Set, 9637

from

$228.99
“Edelbrock part No: 9637 Pushrods are designed for AMC 343-401 V-8 engine applications. These one-piece pushrods are manufactured from high quality 4130 Chromoly steel tubing that has been surface hardened for maximum durability. They have precise formed wedged ends for a high quality fit with the cup seats. A black oxide finish is added for corrosion resistance. Pushrod Specifications: – Outside Diameter: 5/16″” – Length: 8.050″””
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Edelbrock – Edelbrock Performer Series Retainer, 9720 (Part No.9720)

Edelbrock Performer Series Retainer, 9720

from

$103.99
Edelbrock Valve Spring Retainers are made of superior quality steel and are machined and heat treated for maximum strength. They feature a black oxide finish to prevent rust and corrosion
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Edelbrock – Edelbrock Cylinder Head Gasket Set, 7329 (Part No.7329)

Edelbrock Cylinder Head Gasket Set, 7329

from

$113.99
“Edelbrock part No: 7329 head gasket is intended for AMC 304-401 CID V8 engines. This gasket comes as a set and has a 4.275″” bore size, .045″” compressed thickness and 10.6 cc volume. This gasket will fit the 304 AMC small bore applications even though the Edelbrock cylinder head will not. This head gasket is graphite with a steel core and has a stainless steel fire ring. Gasket is compatible with cast iron or aluminum cylinder heads.”
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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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Edelbrock – Edelbrock Performer-Link Adjustable True-Roller Timing Chain Set, 7818 (Part No.7818)

Edelbrock Performer-Link Adjustable True-Roller Timing Chain Set, 7818

from

$130.99
Edelbrock part No: 7818 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 ’69-’81 AMC 290-401 V8, 3218 (Part No.3218)

Competition Cams High Energy Timing Set for '69-'81 AMC 290-401 V8, 3218

from

$73.99
Competition Cams High Energy Timing Set for ’69-’81 AMC 290-401 V8, 3218.
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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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B & M – B & M Torque Converter, Tork Master 2400, 10417 (Part No.10417)

B & M Torque Converter, Tork Master 2400, 10417

from

$478.99
The Tork Master 2400 fits 1967-81 Chrysler, Dodge, Plymouth Torqueflite A727 automatic transmissions (Non lock-up) with 24 spline input and a 10-inch bolt circle. 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.
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Edelbrock – Edelbrock RPM AMC/ Jeep Cylinder Head With Exhaust Crossover Complete, 60139 (Part No.60139)

Edelbrock RPM AMC/ Jeep Cylinder Head With Exhaust Crossover Complete, 60139

from

$1544.99
Edelbrock RPM AMC/ Jeep Cylinder Head With Exhaust Crossover Complete, 60139.
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Edelbrock – Edelbrock Sure Seat Valve Springs, 5792 (Part No.5792)

Edelbrock Sure Seat Valve Springs, 5792

from

$157.99
The Edelbrock No: 5792 Sure Seat Valve Spring for Chrysler 383-400-413-440 V8 1969-79 O.E Cast iron cylinder heads are made of highest quality spring wire and precision wound to close tolerances, our Sure Seat Valve Spring sets are for use on original equipment heads when installing Edelbrock Performer-Plus, Performer RPM and Torker-Plus camshafts. These are the same high-performance springs used on Edelbrock Performer and RPM cylinder heads. For camshaft warranty compliance, use only the springs recommended by Edelbrock for each camshaft application.
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Competition Cams – "Competition Cams SUPER VALVE LOCKS, 3/8"" 1 ST, 612-16" (Part No.612-16)

"Competition Cams SUPER VALVE LOCKS, 3/8"" 1 ST, 612-16"

from

$43.99
Inside tang-to-taper relationship held tightly for repeatable valve spring installed heights
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Edelbrock – Edelbrock Performer-Plus Camshaft Kit, 2132 (Part No.2132)

Edelbrock Performer-Plus Camshaft Kit, 2132

from

$371.99
“Edelbrock Performer-Plus Camshaft No: 2132 is designed for 290-401 AMC V8 engines and produce optimum torque from the low-end to the mid-range. Performer-Plus camshafts should be matched with Performer manifolds for vehicles operating from off-idle to 5500 rpm. The Performer-Plus No: 2132 is a smooth idling cam for daily drivers, trucks, vans, RVs and 4x4s. You can expect a major improvement in throttle response and torque. In the manifold section you’ll find torque graphs showing the power gains from Performer manifolds and Performer-Plus cams. All camshafts include flat tappet lifters (except for cams designed for use with stock roller lifters), assembly lube and instructions. This cam produced 275 Ft Lbs of Torque when paired with Performer AMC intake manifold No: 2131 and stock cylinder heads. Camshaft specifications: – Intake duration: 204 Degrees – Exhaust duration: 214 Degrees – Intake lift: .448″” – Exhaust lift: .472″” – Lobe separation: 110 Degree – Intake Center Line: 105 Degree – Vacuum: 15″””
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Edelbrock – Edelbrock Water Pump AMC Long Style 1973-Later, Prevents overheating, 8832 (Part No.8832)

Edelbrock Water Pump AMC Long Style 1973-Later, Prevents overheating, 8832

from

$365.99
“Edelbrock No. 8832 Water Pump AMC long style 1973-later ideal to prevent overheating in street rods and street machines, as well as in tow rigs and motorhomes. Using state-of-the-art racing technology, Edelbrock has designed these “”super cooling”” Water Pumps to provide maximum flow, maximum pressure and equal distribution to both sides of the block within 1%. Available for most popular applications, these high performance pumps flow in only one direction for optimum efficiency. The casting’s computer-designed internal passages and precision powdered metal impeller produce the maximum flow rate possible.”
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Most Popular Performance Engine Water Pump for 1981 Jeep J20s

Enhance your 1981 Jeep J20 with this popular Performance Engine Water Pump we have in stock, for $365.99.

Edelbrock – Edelbrock Water Pump AMC Long Style 1973-Later, Prevents overheating, 8832 (Part No.8832)

Edelbrock Water Pump AMC Long Style 1973-Later, Prevents overheating, 8832

from

$365.99
“Edelbrock No. 8832 Water Pump AMC long style 1973-later ideal to prevent overheating in street rods and street machines, as well as in tow rigs and motorhomes. Using state-of-the-art racing technology, Edelbrock has designed these “”super cooling”” Water Pumps to provide maximum flow, maximum pressure and equal distribution to both sides of the block within 1%. Available for most popular applications, these high performance pumps flow in only one direction for optimum efficiency. The casting’s computer-designed internal passages and precision powdered metal impeller produce the maximum flow rate possible.”
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Best-Selling 1981 Jeep J20 Performance Engine Cylinder Head Gasket

Upgrade your J20 with our best-selling Performance Engine Cylinder Head Gasket.

Edelbrock – Edelbrock Cylinder Head Gasket Set, 7329 (Part No.7329)

Edelbrock Cylinder Head Gasket Set, 7329

from

$113.99
“Edelbrock part No: 7329 head gasket is intended for AMC 304-401 CID V8 engines. This gasket comes as a set and has a 4.275″” bore size, .045″” compressed thickness and 10.6 cc volume. This gasket will fit the 304 AMC small bore applications even though the Edelbrock cylinder head will not. This head gasket is graphite with a steel core and has a stainless steel fire ring. Gasket is compatible with cast iron or aluminum cylinder heads.”
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Top-Quality Performance Engine Push Rods for 1981 Jeep J20s

Choose a high-quality OEM or aftermarket Performance Engine Push Rod for Jeep J20s and enjoy top-notch performance from $228.99.

Edelbrock – Edelbrock Pushrod Set, 9637 (Part No.9637)

Edelbrock Pushrod Set, 9637

from

$228.99
“Edelbrock part No: 9637 Pushrods are designed for AMC 343-401 V-8 engine applications. These one-piece pushrods are manufactured from high quality 4130 Chromoly steel tubing that has been surface hardened for maximum durability. They have precise formed wedged ends for a high quality fit with the cup seats. A black oxide finish is added for corrosion resistance. Pushrod Specifications: – Outside Diameter: 5/16″” – Length: 8.050″””
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Our Top Pick for a 1981 Jeep J20 Performance Engine Coolant Thermostat

Invest in a durable Performance Engine Coolant Thermostat for your 1981 Jeep, knowing you’re getting trusted brands and expert craftsmanship.

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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Performance Engine Timing Sets and Components for 1981 Jeep J20s

Make a smart move for your 1981 Jeep J20 with products all priced from $73.99 to $130.99.

Edelbrock – Edelbrock Performer-Link Adjustable True-Roller Timing Chain Set, 7818 (Part No.7818)

Edelbrock Performer-Link Adjustable True-Roller Timing Chain Set, 7818

from

$130.99
Edelbrock part No: 7818 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 ’69-’81 AMC 290-401 V8, 3218 (Part No.3218)

Competition Cams High Energy Timing Set for '69-'81 AMC 290-401 V8, 3218

from

$73.99
Competition Cams High Energy Timing Set for ’69-’81 AMC 290-401 V8, 3218.
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FAQs for 1981 Jeep J20 Performance Engines

What are the best-selling Performance Engines for 1981 Jeep J20s?

Out of 12 Performance Engines that fit 1981 Jeep J20s, the following parts are the top sellers:

What’s the price range for 1981 Jeep J20 Performance Engines?

The prices of Performance Engines for the 1981 Jeep J20 range from $31.99 up to $1,544.99 for the most premium parts.

What is the average price of a Performance Engine for a 1981 Jeep J20?

The average price for Performance Engines for the 1981 Jeep J20 is $303.99. 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 Jeep J20 model years?

Yes, we carry Performance Engines for 13 model years of Jeep J20s between 1974 and 1988. The following model years are the most popular for Performance Engine purchases: 1988, 1987, 1986, 1985, 1984, 1983, 1982, 1980, and 1979.

What are the cheapest Performance Engines for my 1981 Jeep J20?

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

Yes. We stock Performance Engines for 5 other popular 1981 Jeep models. Some of the most popular are 1981 Cherokee Performance Engines, 1981 Wagoneer Performance Engines, 1981 J10 Performance Engines, 1981 CJ7 Performance Engines, and 1981 CJ5 Performance Engines.

What types of Performance Engines do you sell for my 1981 Jeep J20?

As of 8/2/26, these are some of the most in-demand types of Performance Engines for a 1981 Jeep J20:

Can I get help with 1981 Jeep J20 Performance Engine orders?

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

What is your return policy for Jeep J20 Performance Engines?

Advance Auto Parts keeps returns simple. For new Jeep J20 Performance Engines and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.