Summit Racing SpeedCard - learn how to get 10% back up to $100

Summit Racing SpeedCard - learn how to get 10% back up to $100

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GMC JIMMY Engines & Components

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Results 1 - 24 of 126

On Sale

Summit Racing™ Bracket Racer SFI Harmonic Dampers

You don't have to sacrifice safety or quality to save money; our affordable Summit Racing™ bracket racer SFI dampers have been spin-tested to 12,500 rpm and carry an SFI-18.1 rating. The carbon steel dampers have an injection-molded and bonded elastomer, easy-to-read engraved timing marks, removable counterweights (where applicable), and a highly polished baked-enamel finish, so they look as good as they perform.

4.57 out of 5 stars ( 388 )

$161.99

$189.99

Cloyes Quick Button Two-Piece Timing Covers

These Cloyes Quick Button two-piece timing covers have a removable center plate with an O-ring seal to allow for easy access to your cam when changing your timing. Depending upon your application, some covers feature a built-in roller cam button that allows you to adjust cam endplay with the cover in place. Precision-machined from die-cast aluminum for sure sealing, these covers fit with most water pumps and timing sets.

4.33 out of 5 stars ( 136 )

$186.99

$224.99

Clevite H-Series Main Bearings

Clevite H-Series main bearings were developed primarily for NASCAR racing, but are well suited to other types of competition engines as well. They're especially good for engines that run at medium-to-high revs. They have steel backings with carefully selected overlays and a high crush factor, plus a medium level of eccentricity. H-Series bearings have enlarged chamfers at the sides for greater crank-fillet clearance and are made without flash plating for better seating. They are also available with either 180 degree or 360 degree oil grooves, as well as an extra 0.001 in. of clearance.

4.66 out of 5 stars ( 133 )

$101.99

$143.99

Proform Super-Street Roller Rocker Arms

These Proform Super-Street roller rocker arms will help rid your engine of internal friction. They feature a race-proven, cage bearing fulcrum and roller tip. The Super-Street rocker arms not only unleash horsepower, but they also lengthen valvetrain component life and reduce wear and tear on valve stem tips. Proform rockers are precision-machined to ensure consistency and ratio accuracy, and they have a great looking anodized finish.

3.7 out of 5 stars ( 125 )

$189.99

$246.99

Cloyes Street Billet True Roller Timing Sets

Offering a level of True Roller advantage for the value-racer, Cloyes upgraded the cam sprockets to feature the strength of billet steel and added critical functioning features. The billet steel durability, 9-keyway induction-hardened crank sprocket, .250 True Roller chain, and precise CNC machining together offer quality and adjustability unmatched in their class. Features include: • Billet steel cam sprocket • Induction heat-treated billet steel crank sprocket • 9 keyways allow +/- 8 degrees • Adjustability in 2 crank degree increments • True Roller chain with .250 in. diameter rollers

4.58 out of 5 stars ( 142 )

$100.99

$164.99

On Sale

Weiand Oil Pan Packages

Weiand oil pan packages were clearly visible on those old gassers, getting them down the track with speed and consistency. The oil pan features trap door baffles to help keep oil under control during hard acceleration, as well as increased oil capacity to keep high performance engine oil systems fed properly. Choose from among dozens of Weiand oil pan packages—a great option for drag race, road race, and circle track applications.

3.13 out of 5 stars ( 104 )

$211.95

Edelbrock Elite II Series Valve Covers

Edelbrock Elite II Series valve covers are the next generation of the original Elite Series valve covers. The Elite II Series feature a design that is influenced by the Elite Series originally released in 1985, but with a new modern take on this classic look. The valve covers are made from heavy-gauge, die-cast aluminum and are finished off with a show quality high luster polished finish. The raised fins are accented by a contrast gloss black finish between the fins for the definitive Elite Series look. Depending on application, Elite II valve covers are available in both stock and tall styles. Tall profile valve covers are 2 in. taller than stock and clear most roller rockers and valve train components, while the stock profile versions clear accessories like air-conditioning and alternator brackets.

4.69 out of 5 stars ( 177 )

$173.95

$238.95

Holley Track Series Valve Covers

Holley Track Series valve covers are GM licensed and provide an excellent way to add high-end appeal to your favorite Chevy engine. These lightweight, yet tough valve covers are constructed of 6061 T-5 sheet aluminum, precision TIG-welded for a proper fit. They feature laser-etched Chevrolet and Bowtie emblems. The covers are available in silver anodized or black coated finishes, along with various heights to clear most popular rocker arm combinations. All models include mounting hardware for quick and simple installation.

3.99 out of 5 stars ( 69 )

$199.95

$230.95

Melling Shark Tooth Oil Pumps

Smoother, tighter, and quicker--Melling Shark Tooth oil pumps utilize helical asymmetrical technology to improve the heartbeat of the traditional internal gear pump. The use of this new gear design feeds your engine an increased flow of oil without the usual pulsing. How much more? About 10 to 25 percent more volume! Equip your setup for a powerful bite of high performance; install one of these Melling Shark Tooth oil pumps. Melling Shark Tooth pumps are: * Smoother--significant reduction in pressure ripple (pulsing) also means a reduction in torque ripple in pump drive, improved distributor operation, a reduction in spark scatter, and improved distributor gear wear and intermediate shaft wear * Tighter--improved sealing of gear tips to housing provides reduced internal leakage and improved efficiency and performance * Quicker--increased inlet vacuum equals faster primes

4.37 out of 5 stars ( 43 )

$132.99

$188.99

ACL Performance Race Series Rod Bearing Sets

ACL Performance offers Race Series rod bearing sets for a wide range of vehicles. These high performance tri-metal engine bearings are designed to withstand higher RPM conditions. They feature a high-strength overlay plate with reduced thickness for improved fatigue properties. Select the crankshaft undersize and quantity recommended for your year/make and engine application. Additional details: * Hardened steel backs on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housing. * Increased crush for improved bearing retention * Elimination of flash plating on the back of the bearings to improve heat transfer through the bearings and to maximize the grip between the bearings and its housing * Increased eccentricity to compensate for bore distortion at high RPM and to assist in the formation of hydrodynamic oil films * 3/4 in. grooved main bearings to optimize bearing load carrying surface area and oil flow to the conrod bearings * Tight consistent wall tolerances to help you maintain consistent clearances * Enlarged ID chamfers on bearing edges (where required) to accommodate large fillet radius on performance crankshafts

5.0 out of 5 stars ( 7 )

$115.99

$179.99

Summit Racing™ OE-Style Harmonic Dampers

Summit Racing™ OE-style harmonic dampers are ideal for those mild street rebuilds that don't require the expense of a high-buck race damper. They feature durable nodular construction with bonded elastomer between the inner and outer rings. The balancers also have engraved timing marks, which means no timing tape! Summit dampers are available in a variety of sizes for many engine balance applications. Models are available for hundreds of vehicles; order the OE replacement recommended for your ride.

4.51 out of 5 stars ( 660 )

$119.99

Melling Performance Oil Pumps

Melling's years of experience are apparent in these Performance oil pumps. They boast a CNC-machined body and cover and hardened steel gears that are up to 25 percent longer, providing additional flow to performance engines with wider bearing clearances. Their drive and idler shafts have been extended into the cover to provide additional support and eliminate dynamic shaft deflection.

4.65 out of 5 stars ( 188 )

$162.99

$187.99

Speed-Pro Hypereutectic Pistons

If you're looking for pistons with an unbeatable combination of performance and value, then Speed-Pro hypereutectic pistons are for you. These pistons are manufactured from aluminum alloy that contains 16 percent silicon for greater strength and wear resistance. They're also molded in the latest permanent-mold technology to ensure the precise fit and tight bore clearances that today's top engine builders demand. Hypereutectic pistons are ideal for use in high performance street, bracket, and oval track racing—and will work perfectly with normal ring end gaps. Choose the model designed for your vehicle and engine application.

4.59 out of 5 stars ( 330 )

$139.99

$257.99

Mr. Gasket Cast Aluminum Valve Covers

Mr. Gasket cast aluminum covers are constructed of high quality die-cast aluminum for an excellent fit. They are available in polished, finned, and ball-milled versions to fit a variety of engines. Features: * Top quality cast aluminum construction * Choice of smooth top polished, finned, or ball-milled designs * Some available in tall versions for additional rocker arm clearance * Thick gasket rail area for excellent sealing * Pre-punched breather openings with baffles * Includes mounting hardware

3.93 out of 5 stars ( 87 )

$114.95

$135.95

Cloyes Hex-A-Just Timing Sets

With Cloyes Hex-A-Just timing sets, infinitely adjustable cam timing is as simple as turning an Allen wrench. Consisting of SAE 1144 billet steel cam and crank sprockets and a true roller timing chain, these timing sets use a special hex-head bushing installed on your cam's dowel pin. This bushing lines up with degree marks on the cam sprocket. You can adjust timing in fractions of a degree (as much as +/-6 degrees) by loosening the cam bolts and turning the bushing with an Allen wrench. Cloyes Hex-A-Just timing sets install under your stock timing cover and can be used in align-bored blocks. Order the model designed for your vehicle and engine application.

4.65 out of 5 stars ( 34 )

$199.99

$263.99

Melling Stock Replacement Cam and Lifter Kits

Restore your engine to its true power potential with Melling's stock replacement cam and lifter kits. They're perfect for either replacement or stock rebuilds. Melling cam and liter kits also include a matched set of lifters so you won't have to worry about mismatched parts during installation.

4.2 out of 5 stars ( 20 )

$269.99

Howards Cams Double Roller Billet Steel Timing Sets

Howards Cams double roller billet steel timing sets are designed for accuracy and long life. Lightweight by design, these sets feature a billet steel cam sprocket with lightening holes, a heat-treated crank sprocket, and a black oxide coating. They also include large .250 in. diameter seamless roller chains.

4.36 out of 5 stars ( 64 )

$124.99

$139.99

Melling High-Volume Oil Pumps

Melling high-volume oil pumps give you an additional 20 to 25 percent of much-needed oil volume for your performance application. For those of you who need added pressure, many pumps are supplied with a high-pressure spring (where noted). The pumps are built using a proprietary casting process, which yields maximum performance and reliability. Every Melling oil pump is completely pressure-tested, including idle and bypass pressure, before it leaves the factory. Dozens of models are available for fitment; order the pump and options needed for your vehicle.

4.61 out of 5 stars ( 344 )

$107.99

$190.99

PowerBond Race Performance Harmonic Balancers

PowerBond Race performance harmonic balancers bring the advantages of bonded balancers to high-revving and high-horsepower street/race applications where an SFI-approved balancer is required. They have been tested beyond 21,000 rpm without failure, and every balancer features a precision CNC-machined AISI 1045 forged steel hub bonded to an equally strong steel inertia ring. They are very light and in most cases, they are only marginally heavier than the original cast iron balancer. The steel inertia ring on the Race Series models is positively protected against forward and backward movement. PowerBond uses our Race Series high-pressure, low-cure that features a natural rubber developed in our laboratory. Every model has easy to read computer etched timing marks and meet SFI specification 18.1.

4.64 out of 5 stars ( 98 )

$201.99

$254.99

COMP Cams Xtreme Energy Camshafts

COMP Cams Xtreme Energy camshafts employ the latest cam technology to provide maximum performance. Whether your use is off-roading, towing, or street performance, there's an Xtreme Energy cam available for you. By using an aggressive lobe profile, these cams provide better throttle response and more top-end horsepower than equivalent cams from other manufacturers—while delivering increased engine vacuum. Hundreds of models are available for fitment on vehicles from 1955 to the present. Select the cam designed for your application.

4.6 out of 5 stars ( 336 )

$226.95

$258.95

Cloyes Race Billet True Roller Timing Sets

Cloyes Race Billet True Roller timing sets provide race-ready performance! These sets feature sprockets machined from premium billet steel on state-of-the-art CNC equipment to ensure the highest quality and consistency. The sprockets are induction-hardened and oil-quenched by Cloyes' in-house, multi-stage heat treat process. Sets include a Cloyes Premium True Roller chain—which features full roller action and superior strength. Side plates are cut and shaved from high-strength steel and are heat-treated for maximum fatigue resistance. Their .250 in. rollers are cold-rolled and hardened to exacting standards, increasing load and rpm capabilities. Cloyes Race Billet True Roller Speed Sets are offered with a choice of 3-or 9-keyway crank sprockets, providing multiple valve timing settings. These sets are hand-matched to qualify center distance and runout, ensuring the best performance with every set!

4.57 out of 5 stars ( 96 )

$140.99

$225.99

Derale Engine Oil Filter Relocation Kits

Now you can easily move your vehicle's oil filter to a more convenient location for quicker and easier filter changes with one of these Derale Performance engine oil filter relocation kits. They work great for engine swaps, too! The kits are available for hundreds of vehicles; order the model recommended for your application.

3.84 out of 5 stars ( 38 )

$104.38

$112.40

King XP-Series Coated Rod Bearings

Give your engine the winning edge with King XP-Series coated rod bearings. Built off the revolutionary XP-Series tri-metal construction, King's factory-applied pMaxKote nano-composite coating takes protection to the next level without adding any additional thickness! These high performance race bearing sets are available for fitment on a wide range of specific vehicle applications. pMaxKote provides: * Superior seizure resistance * Superior cavitation resistance * Superior wear resistance * Superior protection against oil starvation

4.2 out of 5 stars ( 10 )

$122.99

$190.99

PRW Sportsman Steel Roller Tip Rocker Arms

PRW Sportsman steel roller tip rocker arms are an ideal choice for a significant cross-section of engines. Anything from a mild street rebuild to the performance demands of off-track, Circle Track, and drag racing. These 4340 chromoly steel rocker bodies feature a longer pivot slot for higher lift camshafts. They're much stronger than stamped steel, so rocker arm flex is negligible. The roller tip minimizes scrubbing from the valve stem pushing forcefully against the valve guide. This reduces friction and frees up an additional 15 to 30 hp over stock models. PRW Sportsman steel roller tip rocker arms are an excellent performance alternative to stock rockers. Order the set recommended for your specific vehicle and engine size. Features, items, and specs: * Wide assortment of ratios to suit almost any cam profile * PRW RockerLocs * Rated at 350 lbs. open spring pressure * Heat-treated pivot balls

3.71 out of 5 stars ( 34 )

$150.64

$204.78

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