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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PAC Racing Valve Spring Seats and Cups

PAC Racing valve spring seats and cups are a great way to prevent dancing springs, which would tear up your aluminum heads. High performance racing engines place extreme pressure on the springs. These retainers are essential for use on aluminum heads. They fit the inside or outside diameter of the springs, preventing spring seat movement.

4.5 out of 5 stars ( 8 )

$5.95

Howards Cams Exhaust Rotator Eliminators

These exhaust rotator eliminators from Howards Cams are used to make up the difference when doing away with factory big block Chevy exhaust rotators. No longer will you have to stack shims to take up the space! These .300 in. thick spacers also provide a step for the valve spring so that it cannot walk around on the cylinder head.

4.33 out of 5 stars ( 6 )

$55.99

COMP Cams Valve Springs

Valve springs are one of the most critical and overlooked components in your engine. They must be matched to your cam in order for the engine to reach its full potential. It does absolutely no good to install a cam that will perform up to 8,000 rpm if you do not have the correct springs. Use the only valve springs that will give the recommended spring pressure with the valve both on the seat and at maximum lift. COMP Cams valve springs are offered in single and dual styles to meet your cam requirements.

4.61 out of 5 stars ( 255 )

$106.95

Isky Valve Spring Retainers

Maybe you're building up a real pavement-ripper, or maybe you're just rebuilding your daily driver. Either way, you need Isky valve spring retainers to complete the package. They've been making valvetrain components since the early hot rod days. Put Isky quality to work under your hood.

4.5 out of 5 stars ( 8 )

$212.99

Edelbrock E-210 Cylinder Heads

Step up to race-level performance with OEM compatibility using these Edelbrock E-Series E-210 aluminum cylinder heads. They feature larger runners for increased airflow, revised exhaust ports, and larger diameter springs for higher lift camshafts--perfect for spec series racers and large-displacement engines. Available bare or assembled, E-210 cylinder heads allow you to use off-the-shelf headers and hardware. Forget those overseas castings; go with quality, economy, and performance. Go with Edelbrock E-Series E-210 cylinder heads.

4.92 out of 5 stars ( 13 )

$1,654.95

Summit Racing™ HDR Thickwall Chromoly Pushrods

Summit Racing™ HDR premium thick-wall pushrods are a great upgrade for your engine. Factory pushrods (and even .080 wall aftermarket versions) act like a pogo stick in a running engine. Not only is static spring pressure working against them, it's also the valvetrain inertial mass increasing with RPM. This reduces power and valvetrain life. While a .080 thin-wall pushrod may not break, it doesn't mean it's the best option. Enter the HDR's. Summit™ used FEA (Finite Element Analysis) in the initial testing. We didn't just compare them to thin-wall welded-ball factory pushrods, but with aftermarket models, as well. The results speak for themselves! * The Summit™ HDR 5/16 x .105 wall pushrods have 20 percent less stress and 25 percent less deflection than a typical 5/16 x .080 chromoly pushrod * The Summit™ HDR Pro LS 11/32 x .120 wall have 25 percent less stress and 28 percent less deflection than a typical 5/16 x .080 wall chromoly pushrod * The Summit™ HDR 3/8 x .135 pushrods commonly used in big blocks has 15 percent less stress and 20 percent less deflection than a typical 3/8 x .080 wall chromoly pushrod Summit Racing™ added other high-end features like 210 degree ball ends to cope with extreme lobe lift and clear the rocker and are available in multiple lengths. * HDR 5/16 pushrods are offered in common LS, SBC, and SBF lengths * HDR Pro LS 11/32 pushrods add .030 diameter AND .120 wall thickness over a 5/16. Although most LS engines came with 5/16 pushrods, 11/32 pushrods fit any stock or aftermarket cylinder head. The added thickness adds much needed strength to any LS cam swap or engine build. Being available in .025 in. increments allows for fine tuning of hydraulic lifter preload with the LS's non-adjustable rockers. * HDR 3/8 pushrods fit the LS7 and common BB Chevy combinations. They have .135 wall thickness for maximum strength. Pushrods are some of the best horsepower-per-dollar components in your engine, so step up to the HDR's for your build!

4.86 out of 5 stars ( 59 )

$89.99

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$178.99

Edelbrock E-205 Cylinder Heads

You're taking a step up in performance with Edelbrock E-205 small block Ford cylinder heads. Featuring larger runners for increased airflow, revised exhaust ports, and larger diameter springs for higher lift camshafts, Edelbrock E-205 cylinder heads are ideal for spec series racers and larger displacement engines. They are able to support the power that you need to compete--more than 500 naturally aspirated horsepower and even more in forced induction applications! Get race-level performance with OEM compatibility when you bolt on a pair of Edelbrock E-205 cylinder heads.

3.5 out of 5 stars ( 2 )

$1,687.95

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$1,838.95

COMP Cams XFI VSR Modular 3V Camshafts

Ford 4.6L/5.4L modular 3-valve engines found in 2005 and newer Mustangs are all the rage. So the question on everyone's mind becomes, "How can I further improve the performance of these powerful engines?" COMP Cams XFI VSR Modular 3V (Valve Springs Required) Camshafts deliver a great power improvement over stock levels. These cams are the next step up from the COMP Cams NSR (No Springs Required) Cams and represent a major upgrade in power production. When compared to the NSR, stock valve spring compatible cam series, the VSR cams offer a substantial power gain in the higher rpm ranges. To achieve this, a high-lift design that requires a COMP Cams Beehive Valve Spring upgrade was created to maximize power within the limits of the OEM unmodified cam phasers. These new VSR camshafts are available for both naturally aspirated and supercharged engines, with two levels available in each series; one designed for maximizing mid-range power and torque, while the other maximizes top end horsepower. The performance secret behind these camshafts is in the extensive dyno testing that allowed them to determine precise cam timing events. Combining these optimized timing events with a high-lift lobe design offers substantial improvements in both power and throttle response. Designed to work flawlessly with the factory VCT, which is programmed to retard the cam timing above 4500 rpm, the new COMP Cams XFI VSR Ford 4.6L/5.4L Modular 3V Cams optimize both mid and high rpm performance.

Not Yet Reviewed

$1,028.95

COMP Cams XFI SPR Modular 3V Camshafts

The COMP Cams XFI SPR Ford 4.6L/5.4L modular 3V (Springs & Phaser Mods Required) camshafts are the best way to achieve the most power and torque increases possible with the popular Ford Modular 3V engine. These designs are the next step up from the COMP Cams VSR (Valve Springs Required) cams. When compared to the VSR cams, the SPR cams offer additional mid-rpm power increases as well as substantial power gains in the higher rpm ranges. In addition to increases in horsepower, you can also expect another 800-1000 rpm of useable engine speed and an awesome sounding idle lope to match. To achieve this extra level of performance, lobe profiles and timing events were specifically designed to work with the factory variable cam timing (VCT) system cam phasers for all 2005 and newer Ford Modular 3V engines. These cam phasers were modified with the required COMP Cams Cam Phaser Limiter kit to restrict their movement to no more than 20 degrees. This simple modification gains additional piston to valve clearance, allowing for much larger cam designs. This results in cams that not only maintain low and mid-range power, but have incredible high rpm performance as well, all while maintaining the benefits of cam phasing. As noted by the COMP Cams engineering staff during extensive dyno testing, these camshafts provided the biggest power and torque improvements of any cam series they've ever tested in the Ford Modular 3V engine.

5.0 out of 5 stars ( 1 )

$1,028.95

Howards Cams UltraMax Mechanical Roller Lifters

The ultimate lifters for your severe racing applications—Howards Cams UltraMax Series steps up the performance so you can do the same. These bushed, direct-lube mechanical roller lifters are made for ultra-high spring pressures and the most aggressive cam lobes. Howards replaced the needle bearings in the roller tip with solid bushings, and they offer full-time, high-pressure oiling to the bearing axles. Together, these features deliver the highest rpm and high spring pressure capabilities available. The lifters have lightened, steel alloy bodies with a special enhanced finish, heat-treated stainless steel link bars, and case-hardened 8620 rollers. They're fully rebuildable. Go for the win with a set of Howards Cams UltraMax bushed, direct-lube mechanical roller lifters.

5.0 out of 5 stars ( 3 )

$229.99

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$1,349.99

Summit Bucks

S&S Cycle Early Twin Cam Gear Drive Camshaft Kits

Step up the performance of your Twin Cam with affordable S&S Cycle Early Twin cam gear drive camshaft kits. Some kits allow you to use stock springs, and the complete kits include a gear drive camshaft set and inner gears, an outer cam drive gear kit, and a camshaft installation kit. Performance doesn't have to leave you with empty pockets. S&S Cycle Early Twin Cam gear drive camshaft kits can save you time and money, while providing the added power that you want.

Not Yet Reviewed

$948.95

Crower Compu-Pro Performance Level 1 Camshafts

Crower Compu-Pro Performance Level 1 camshafts deliver the mileage. Their enhanced throttle response and low-end torque with fuel-efficient motoring make them great stock replacements. Whether you drive a car or truck, you can step up the performance and pass a few pumps with Crower Compu-Pro.

Not Yet Reviewed

$295.99

Summit Racing™ Pro BBC 4-7 Swap Hydraulic Roller Camshafts

Summit Racing™ Pro BBC 4-7 Swap hydraulic roller camshafts are offered in a dozen versions to cover street/towing, street/strip, and drag race applications. Each cam features a 4/7 firing order, requiring the re-routing of spark plug wires for 1-8-7-3-6-5-4-2. Cam button, a melonized or composite distributor gear, and billet compatible fuel pump pushrod are required. Choose your level of performance. Additional features and notes: * Designed for beehive or lighter 1.4 to 1.500 dual springs * Designed in 12 steps, intake closing point is most important to operating rpm * Bigger cams with increased overlap REQUIRE more open and free-flowing exhaust for maximum mid- and high-rpm power * Cam advance is ground-in, so install dot-to-dot * Although the advance may seem larger than normal, it's designed for maximum power under the curve * Track testing is recommended before altering cam advance

4.0 out of 5 stars ( 1 )

$299.50

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$349.99

COMP Cams Thumpr NSR Ford Coyote 5.0 Modular 4V Camshafts

COMP Cams Thumpr NSR Ford Coyote 5.0 modular 4V camshafts present big power gains, along with the distinctive Thumpr idle lope—and you don't need to upgrade the valve springs. Ford 5.0L modular 4-valve V8 engines have become hugely popular, so how do you improve upon already great performance? With a camshaft from the COMP Cams family of Thumpr NSR camshafts! Choose the cam model (Thumpr or Mutha' Thumpr) designed for your vehicle and engine application. Features include: * Brings legendary Thumpr sound to the 5.0 Coyote * Optimized lobe profiles for increased airflow and exhaust efficiency * Big performance gains in mid- to upper-rpm range * Valve spring upgrade not required * One-piece billet steel construction * Compatible with N/A and supercharged applications

Not Yet Reviewed

$2,046.95

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