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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ATI Replacement Hubs

ATI replacement hubs are designed to fit your existing ATI harmonic balancer. They are made of steel or aluminum and have different finishes, depending on your engine's application.

4.33 out of 5 stars ( 30 )

$106.12

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$132.65

ATI Super Damper Serpentine Series Harmonic Balancers

ATI Super Damper Serpentine Series harmonic balancers are patented and feature grooves for serpentine belts machined into the outer damper shell. The dampers come with six outer grooves for standard OEM drive systems—but eight and 10 grooves are available for supercharger or turbo applications. Serpentine dampers are offered in a variety of diameters, and crank hubs may be fitted with a 6-groove serpentine pulley to drive external oil pumps or vehicle accessories. The Serpentine Series Super Dampers fit all ATI GM-front crank hubs and can be adapted to many engine combinations, providing maximum flexibility. They're available in steel or lightweight, hardcoated aluminum. Features and benefits: * Eliminates torsional crankshaft vibrations * Exceeds SFI 18.1 specs * Black zinc chromate finished * Tunable, rebuildable, and extremely efficient at all rpms * Laser-engraved 360 degree timing marks

4.74 out of 5 stars ( 246 )

$368.90

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$588.80

Milodon Timing Gear Drive Replacement Parts

Milodon offers nearly 20 types of timing gear drive replacement parts for specific year/make and engine applications. Direct-fit components include cam covers, gears, and hubs; crank gears; bushings, bearings, seals, and hardware; main housings; idler axles, gears, and retainers; mounting plates and more. Order the replacement parts recommended for your timing gear drive.

4.22 out of 5 stars ( 9 )

$11.95

Clearance

Romac Gold Series Harmonic Balancers

Romac performance harmonic balancers are made in a range of materials to cater for all performance needs. They are loaded with exclusive high-tech features and are offered for more unique applications than any balancer made. Romac Gold Series harmonic balancers feature a steel inner hub with an anodized alloy outer ring are available in blower balanced styles. They are SFI 18.1 spec approved, and feature 360 degreed and fully encapsulated outer rings via a shoulder at the rear and a serviceable circlip mounted at the front of the outer ring. All Romac balancers are individually consecutively marked, fully serviceable, and need no special bonding with the elastomer. Whether your engine is street or strip, Romac harmonic balancers will suit all your needs. Choose the proper fit for your vehicle.

Not Yet Reviewed

$354.73

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$667.19

$249.50

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$469.50

Chevrolet Performance 6.0L 366 C.I.D. L76 Remanufactured Crate Engines

Whether you're looking to build a reliable engine for towing and hauling or want the foundation for a high-performance build, the Chevrolet Performance 6.0L 366 C.I.D. L76 Remanufactured Crate Engines are a great starting point and at a more affordable cost. These crate engines boast a number of features and benefits. Each engine is tested to meet or exceed GM's original equipment specifications. Additionally, every component is inspected and replaced if necessary. As a result, these remanufactured crate engines provide excellent value and dependability. Specific information (instructions): The replacement crate engines are built with two different designed oil pans. Differences are the first design oil pan has threaded hole for oil level sensor; the second design oil pan is without hole for the oil level sensor. Transfer oil pan from original engine or procure new, if required. For C/K Trucks, G-van applications, the oil pan on the replacement engine has been upgraded with a new oil deflector (shield) installed over a new oil pressure relief valve. If transferring the original oil pan to the replacement engine transfer these new components to that oil pan. --Transfer crankshaft balancer, crankshaft sensor, camshaft sensor, sensor wiring harness and bracket from original engine or procure new. --Install new crankshaft balancer bolt that is included with engine assembly. --Refer to instruction sheet for general/detailed information and instructions on components that are required to be transferred from the original engine assembly or procured new. --Transfer crankshaft balancer, crankshaft sensor, camshaft sensor, sensor wiring harness and bracket from original engine or procure new. --Install new crankshaft balancer bolt that is included with engine assembly. The replacement engine is built with a first or second design oil pan. The first design pan has a threaded hole for applications equipped with an oil level sensor. The second design oil pan is for applications that do not use an oil level sensor; no threaded hole. Transfer oil pan from original engine or procure new, if required. The replacement engine is built with first or second design valve rocker arm covers. The first design valve covers do not use quick connect PCV tubes. The second design valve covers use quick connect PCV tubes. Transfer valve covers from original engine or procure new, if required. The replacement engine may use rivet-type plugs in place of the coolant air bleed covers located at the top rear of each cylinder head. In applications that contain the rivet-type plug, it is not necessary to install the coolant bleed covers. For LS4 Applications, transfer the A/T flywheel/flexplate locator that is pressed into the rear hub of the crankshaft from the original engine or procure new. For C/K Trucks, G-van applications, the oil pan on the replacement engine has been upgraded with a new oil deflector (shield) installed over a new oil pressure relief valve. If transferring the original oil pan to the replacement engine transfer these new components to that oil pan. For 2007 Cadillac Escalade and GMC Yukon Denali applications w/6.2L L92: Engines prior to April 2006 were built with AFM (Active Fuel Management) hardware components, but the AFM system is not enabled on the 2007 L92 engine. The replacement engine does not contain the AFM hardware; it includes a valley cover that is used in place of the VLOM (valve lifter oil manifold). Do not transfer AFM hardware to replacement engine. When performing an engine replacement on a L92 engine that was originally equipped with AFM hardware, the VLOM electrical connector must be removed from the wiring harness. Included Engine Content: * Engine Block * Pistons * Crankshaft * Connecting Rods * Cylinder Head * Camshaft * Front Cover * Housing, Cr/Shf Rear Oil Seal * Valve Cover/Cam Cover * Valve lifter Oil Manifold (VLOM) * Oil Pan

Not Yet Reviewed

$7,373.99

Professional Products PowerForce Harmonic Dampers

Professional Products PowerForce harmonic dampers are extremely durable—and economically priced. They're built with a bonding process which adheres the elastomer to the I.D. of the inertia ring and the O.D. of the hub, utilizing a strong adhesive along with an improved elastomer to create a much stronger bond. PowerForce dampers also feature white, easy-to-read timing marks against a painted black background. Each unit is accurately balanced and closely machined for the correct fit. Dozens of models are available for applications from 1955 and up. Choose the size, material, finish, keyways, and other options recommended for your vehicle.

4.36 out of 5 stars ( 337 )

$79.99

ATI Super Damper Harmonic Balancer Shells

ATI Super Damper harmonic balancer shells are specifically designed for high-rpm engines. Their proven elastomer is engineered and tuned to eliminate damaging crankshaft harmonics that cause parasitic horsepower loss. These damper shells are built to all-but-eliminate worn parts and timing problems. These are the shells only and must be used with an ATI hub, which is sold separately. Order the model recommended for your vehicle application.

4.17 out of 5 stars ( 18 )

$268.10

ATI Super Damper Standard Harmonic Balancers

Patented ATI Super Damper standard harmonic balancers are the only crankshaft dampers designed exclusively for high performance engines. Inner and outer shells are available in aluminum or steel, and contain a steel inertia weight. The inertia weights have six (2-ring design) or eight (3-ring design) computer-machined grooves to retain the proper durometer O-rings (dyno tested for each application). Whether you race or just drive on the street, ATI harmonic balancers are the perfect choice. Features include: * Eliminates torsional crankshaft vibrations * Exceeds SFI 18.1 specs * Black zinc chromate finished * OEM equipment on a variety of crate engines * Tunable, rebuildable, and extremely efficient at all rpm * Laser-engraved 360 degree timing marks * Supercharger and power steering drive pulleys available for some applications

4.6 out of 5 stars ( 240 )

$368.90

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$498.50

Milodon Gear Drive Assemblies

Milodon timing-gear drive assemblies are designed for all-out competition, but work equally well in any application. Their proven fixed idler gear system is capable of maintaining consistent cam timing without siphoning off power the way 4-gear types can. Timing changes are easy via Milodon's adjustable bolt pattern cam gears and hub assemblies. Made for strength and durability, these gear drives will last indefinitely. They are available in a flat-cover style, which uses a stock-type water pump, or an injected/blown style, which doesn't use a stock-type pump.

4.31 out of 5 stars ( 16 )

$539.95

All Balls Racing Wheel and Carrier Bearing Seal Kits

All Balls Racing wheel and carrier bearing seal kits are hands-down the most complete line of bearing seal kits on the market! They are available in a wide variety of powersports applications, from ATV and off-road to street bikes. These All Balls Racing wheel and carrier bearing seal kits have premium high-speed bearings that feature low-drag, double-lip seals on both sides to provide superior exclusion of water and dirt and improved grease retention. High performance Chevron SRI-II grease features special rust inhibitors for the most demanding applications. Type TC nitrile elastomer wheel seals are specifically designed to keep out water and dirt. Their rubber coated outside diameter helps to create an optimum seal at the hub.

4.45 out of 5 stars ( 20 )

$66.93

ATI Super Damper Supercharged Series Harmonic Balancers

These Supercharged series dampers place the powerful protection of ATI Super Damper inside of the crankshaft blower pulley. Available in 66 to 77-tooth 8mm pitch, and 40 to 51-tooth 14mm pitch, these balancers eliminate torsional crankshaft vibrations. These balancers exceed SFI 18.1 specs, have laser-engraved 360 degree timing marks, and are finished in a black zinc chromate. Numerous pulley offsets are available to keep the blower drive as close to the engine as possible, reducing the bending moment to the crankshaft nose.

4.72 out of 5 stars ( 18 )

$449.12

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$461.15

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