Engines & Engine Parts

Welcome to your headquarters for horsepower—the place to get everything you need to build real power and performance! We’ve got competition-proven crate engines, performance-matched...

Welcome to your headquarters for horsepower—the place to get everything you need to build real power and performance! We’ve got competition-proven crate engines, performance-matched top end kits, and complete rotating assemblies from the biggest names in the industry. You can add a set of high-flow cylinder heads to your powerplant, upgrade your valvetrain, improve your oiling system, or drop in a new set of pistons. We also have a complete selection of crankshafts, connecting rods, harmonic balancers, pulleys, and engine brackets. We even have everything you need to restore the horsepower that time has stolen from your...

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Summit Racing™ Pro SBC 4-7 Swap Camshafts

Summit Racing™ Pro SBC 4-7 Swap hydraulic flat tappet camshafts are American made and utilize ultra-modern lobe technology. The revised firing order increases power through better mixture distribution and smoother running through equalized crankshaft journal loading. These racing cams are available in Stage 1 through Stage 8 configurations. Order the model with specs recommended for your Chevy small block engine application.

4.73 out of 5 stars ( 15 )

$199.99

AFR 220cc SBC Eliminator Racing Heads

Race-ready AFR 220cc SBC Eliminator racing heads feature 100 percent CNC-ported intakes with greater detail. They also come with 100 percent CNC-ported combustion chambers and 80cc exhaust ports with a 3/4 in. thick head deck (ideal for nitrous or blower applications). Standard valves are lightweight 8mm, 2.080 in. intakes and 1.600 in. exhausts with AFR's hardened ductile iron interlocking valve seats. The valve springs included are intended for use on roller camshafts. They also offer exceptional flow characteristics, a 23 degree valve angle, and standard valve spacing. These cylinder heads are perfect for 350 to 400 c.i.d. engines in bracket drag cars, sportsman oval trackers, and highly modified street-class cars operating between 3,000 and 7,500 rpm (higher rpm ranges are possible, depending on the combination of parts).

4.59 out of 5 stars ( 22 )

$2,791.00

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$3,126.00

PAC Racing 300 Series Valve Spring Retainers

Expected motor life has increased greatly through the years, but anything with moving parts is susceptible to wear and will eventually need rebuilt. PAC Racing 300 Series valve spring retainers are made from 4140 aerospace grade chromoly steel, making them an excellent choice for stock to slightly modified rebuilds. PAC does their own in-house manufacturing, allowing them to build strength into these units. They are heat-treated for solid wear characteristics and to raise the tensile strength, and for a rust-free finish, they apply black oxide coatings. Into every engine a little work must go; make certain you use the right parts for your stock to slightly modified build with PAC Racing 300 Series valve spring retainers.

4.7 out of 5 stars ( 10 )

$5.95

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$86.48

PAC Racing 1200 Series Circle Track Valve Springs

PAC Racing 1200 Series circle track valve springs are great for providing your valve train with optimal performance. Select them when you're upgrading camshafts or doing engine rebuilds. The 1200 series use a premium alloy that outperforms automotive industry standards; and PAC Racing processes the alloy to aerospace shot-peening standards to achieve superior fatigue dependability. This ensures that the springs maintain the load needed to perform lap-after-lap.

5.0 out of 5 stars ( 3 )

$17.13

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$249.10

GMB Timing Belt Idler Pulleys

When an engine has timing belt issues, the root cause is not always the timing belt. It may be the timing belt tensioner or the idler pulley. GMB timing belt idler pulleys will guide your belt, keeping it aligned to provide proper engine performance. These replacements are built to withstand high performance use and feature a triple-lip seal design that maximizes grease retention and prevents contamination. They are rigorously tested to ensure quality, meeting or exceeding OEM specifications. GMB is known for Global OEM Manufacturing technology, and their proprietary designs ensure your idler pulley is built to last. Select the one recommended for your vehicle.

5.0 out of 5 stars ( 1 )

$21.99

Summit Racing™ Pro SBC 4-7 Swap Cam and lifter kits

Summit Racing™ Pro SBC 4-7 Swap hydraulic flat tappet camshafts are American-made and utilize ultra-modern lobe technology. The revised firing order increases power through better mixture distribution and smoother running through equalized crankshaft journal loading. These kits provide the cam, lifters, and assembly lubricant in one package--and are available in Stage 1 through Stage 8 configurations. Order the model with specs recommended for your Chevy small block engine application.

4.0 out of 5 stars ( 7 )

$290.68

PRW Rocker Arm Adjuster Screws

PRW rocker arm adjuster screws are designed to thread into your rocker arm. They are made of hardened steel and feature a black oxide finish for maximum durability. The screws can be adjusted to the pushrod by using the internal Allen head and the 12-point locknut.

3.63 out of 5 stars ( 8 )

$7.06

PRW LS Series Fulcrums

PRW LS Series fulcrums are performance upgrade kits for GM LS engine rocker arms. They replace the stock rocker fulcrum with a stronger trunnion assembly—often featuring drawn cup bearings or silicone bronze bushings instead of the factory needle bearings—to enhance durability and handle higher lift cams and RPMs. These kits are designed to upgrade the stock LS rocker arms to make them more robust for performance applications. Key features: * The primary purpose is to improve the strength and durability of factory LS rocker arms, not to replace them entirely * Kits typically include replacement fulcrums (trunnions), circlips, and fasteners for the 16 rocker arms in a V8 engine * Kits often replace the stock's "uncaptured" needle bearings with more robust drawn cup bearings or oil-lubricated silicone bronze bushings, which are less prone to failure and collapsing * This upgrade makes the valvetrain more reliable under the stress of performance modifications like high-lift camshafts and stiffer valve springs * They provide a significant strength upgrade without the cost of purchasing a full set of high-end aftermarket rocker arms

Not Yet Reviewed

$3.97

PowerBond Street Performance Harmonic Balancers

PowerBond Street Performance harmonic balancers bring bonded balancer technology within the budget of every performance street engine builder. They are also perfect for limited spec race classes, such as late model stock that require an OEM-style balancer. The bonded dampening rubber in every balancer eliminates spinning and component separation giving reliable performance in engines used up to 6,500 rpm. PowerBond Street Series balancers use high-strength SG (Spheroidal Graphite) iron rings and hubs that are pressure-bonded, and high-pressure, low-cure that features a natural rubber developed in our laboratory. All PowerBond Street Series balancers feature an etched black primer with a 2-coat clearcoat and fully etched laser timing marks.

4.52 out of 5 stars ( 33 )

$211.99

ARP Timing Cover Bolt Kits

Securing your timing cover is easier than ever with ARP timing cover bolt kits. You can choose between polished stainless steel and chromoly black oxide finishes. They are available in your choice of standard hex or compact 12-point style heads, and washers are included.

3.68 out of 5 stars ( 239 )

$31.99

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$34.99

Howards Cams Retrofit Hydraulic Roller Camshafts

Howards Cams retrofit hydraulic roller camshafts offer more lift and more power for less money. These street performance grinds are perfect for those wanting to upgrade to hydraulic roller cams. Manufactured using the highest grade race-quality cores, Howards precision-grinds their cams to provide the quality and performance that you want at a reasonable price. Overhaul your valvetrain for mild to wild street performance with Howards Cams retrofit hydraulic roller camshafts. Hundreds of models are available for a wide range of vehicles from the 1950s and up.

4.9 out of 5 stars ( 60 )

$397.99

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$508.99

ARP High Performance Series Cylinder Head Bolt Kits

ARP High Performance Series head bolt kits are tough. They are rated at 180,000 psi--15 percent stronger than Grade 8 fasteners. They come available with a reduced wrenching hex head or 12-point head that help eliminate the need for valvetrain removal when re-torqueing cylinder heads.

4.8 out of 5 stars ( 1067 )

$79.99

PowerBond Premium OEM Replacement Harmonic Balancers

PowerBond Premium replacement harmonic balancers offer high-quality for the professional engine rebuilder or shade tree mechanic. Featuring a spheroidal graphite iron casting which is considered near-steel strength material, they use both inserted and pressure-bonded rubber that produces rubber strength that is stronger than competitive balancers. PowerBond Premium replacement harmonic balancers are available for the most popular passenger cars, light commercial trucks, and 4WD applications.

4.55 out of 5 stars ( 215 )

$114.99

PRW Rocker Arm Pedestals and Stands

High-rpm can cause fluctuation in your valvetrain, leading to damaged parts. Add strength and stability in your valvetrain with PRW rocker arm pedestals and stands.

Not Yet Reviewed

$5.35

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$123.09

PRW Rocker Arm Bolts

PRW rocker arm bolts are offered in different underhead lengths, either individually or in sets of different quantities. They are manufactured from premium steel and treated with a black oxide finish. Choose the preferred size to meet your application needs.

Not Yet Reviewed

$180.71

March Performance Aluminum V-Belt Water Pump Pulleys

March Performance aluminum V-belt water pump pulleys are precision CNC-machined to run perfectly true. Machined from 6061-T6 aluminum for extra strength and wear, they feature a no-polishing, clear powdercoated finish. Choose from 1 or 2-groove water pump pulleys for your application. They are available in performance ratios for increased horsepower during normal street driving, and high water flow ratios for increased cooling during critical low-speed driving, to prevent overheating.

4.46 out of 5 stars ( 108 )

$109.99

PRW Rocker Arm Studs

PRW rocker arm studs are premium engine fasteners, made from strong, heat-treated 4135 chromoly steel with rolled threads. They're designed to securely hold rocker arms in place, handling the extreme forces in race and high performance engines for reliable valvetrain operation. The studs are crucial for securing the rocker arms that open and close engine valves, often paired with poly locks and used in upgraded systems for better durability and performance than stock parts. Order the set recommended for your vehicle. Additional product details: * Material: Cold-formed from 4135 chromoly alloy steel for maximum strength * Construction: Rolled threads provide superior durability and resistance to stripping * Application: Engineered for high performance and racing engines where stock studs might fail * Function: They act as threaded posts in the cylinder head, anchoring the rocker arms and associated hardware (like poly locks) * Durability: Standard components can bend or break under high spring pressures and aggressive valve lift * Reliability: PRW studs provide a secure, dependable foundation for the valvetrain in demanding conditions * Upgrades: Essential when upgrading to stronger rocker arms or higher-rate valve springs

1.0 out of 5 stars ( 1 )

$3.89

March Performance Crankshaft Pulleys

March Performance crankshaft pulleys are CNC-machined to run true. These pulleys are available in both standard and underdrive sizes. Underdrive pulleys help to increase horsepower by reducing accessory pulley rotation effort at the crankshaft.

4.71 out of 5 stars ( 240 )

$116.99

D.S.S. FX-Series Forged 4032 Alloy Pistons

Pushing the envelope on your engine combination? Need parts that will stand up to the demands of today's power levels? D.S.S. FX-Series forged 4032 alloy pistons increase your horsepower potential without busting the budget. Forged and machined with premium aircraft quality 4032 alloy, these pistons are a great choice for naturally aspirated, nitrous or boosted engines with the added strength from the internal gussets. Additional CNC milling removes material in non-critical areas to achieve a lighter weight for the perfect balance of strength, power, and longevity. D.S.S. FX-Series pistons feature a patented X-Groove skirt design, which reduces damage caused by fuel wash down and break-in debris for superior skirt, cylinder, and ring life. For stroker engines, the advanced skirt design improves piston stability and ring seal which provides quieter operation. Select the pistons for your application needs. Features include: * Forced pin oiling * Drilled bottom land intersecting oil groove drain backs * Pin lock ring removal slot * Precision honed piston pin bores * High strength piston wrist pins * Deep CNC valve reliefs

5.0 out of 5 stars ( 9 )

$689.95

Eagle Competition Rotating Assemblies

Eagle competition rotating assemblies consist of name-brand quality components for a wide range of engines at an affordable price. Depending upon your selection, these kits may feature a crankshaft, pistons, piston rings, rod and main bearings, or connecting rods. Balanced assemblies are also available. Order the model designed for fitment on your year/make vehicle and engine application.

4.54 out of 5 stars ( 35 )

$2,649.99

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$2,799.99

Diamond Pistons Big Block 24/26 Degree Street/Strip Flat Top Series Pistons

Diamond Pistons Big Block 24/26 Degree Street/Strip Flat Top Series pistons are available for a variety of applications, including many Chevrolet V-8 engines from 1965-90. Forged from aluminum with single valve relief, these flat top-style pistons are offered in different bore, stroke, and rod length sizes—along with several other options. Order individually or in a set of 8. Additional details: * 1,200 hp rated * Forced pin oilers from the oil ring * Pin fitted * 3-D pockets * Designed for mild boost applications * Pins, locks and support rails (if required) included

Not Yet Reviewed

$136.00

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$1,542.99

CP Pistons Bullet Series Piston and Ring Kits

CP Pistons Bullet Series piston and ring kits are value-packed replacements. Offered at an affordable price, these high-quality pistons incorporate everything that has made CP an industry leader—extensive research, computer-designed forgings, tight tolerances, and rigorous quality control. Having Bullet Series pistons means you no longer have to compromise high performance, even on a tight budget. They're manufactured from 2618 forged aluminum alloy for strength and durability. Additional features include: * Piston balance 1 gram * Dual forced pin oilers * Contact reduction grooves * Accumulator groove * Contemporary high performance ring sets * Forged side relief * Chromoly wrist pins with wire locks

5.0 out of 5 stars ( 5 )

$1,016.40

Clay Smith Cams Solid Lifters

Clay Smith Cams solid lifters are manufactured in the USA from the high-quality hardened iron alloys designed to withstand normal engine stresses and contamination. Material and the design makes the lifters lightweight, yet exhibit superior strength, and a patented oil metering system limits the amount of oil that reaches the top end. This keeps as much oil in the crankcase as possible, while still providing adequate lubrication to the top end. In addition, the lifters heat-treated pushrod seats are used to eliminate wear from your pushrods in racing engines with high valve spring pressures.

Not Yet Reviewed

$203.85

Wiseco Powersports Pro-Lite Piston Kits

Wiseco powersports piston kits include your rings, piston pin, and circlips. These 2-stroke kits feature Pro-Lite pistons that are CNC-machined for optimal cam shape and profile, horsepower, and service life. Wiseco has a decade of experience producing quality pistons for dirt bikes, ATVs, snowmobiles, outboard marine engines, and motorcycles. Their piston kits offer strong, lightweight pistons with optimized designs to improve engine efficiency and maximize your torque and throttle response. Plus, Wiseco powersports piston kits are produced right here in the USA. It's time to blaze your own trail with Wiseco powersports piston kits.

4.13 out of 5 stars ( 8 )

$167.99

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$312.99

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