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™ LS Series Retrofit Trunnion Kits SUM-141560

Summit Racing™ LS Series Retrofit Trunnion Kits SUM-141560

Gen. 3/4 Chevy LS Rocker Arm Trunnion Upgrade Kit, Bronze Bushing, Retrofit, Rectangle and Cathedral Port Rockers, Set of 16

Part Number: SUM-141560

4.35 out of 5 stars ( 72 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Summit Racing™ LS Series Retrofit Trunnion Kits SME-143002

Rocker Arm Trunnion Upgrade Kit, Trunnion Upgrade, Chevy, LS, Set of 16

Part Number: SME-143002

4.69 out of 5 stars ( 62 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

COMP Cams Retrofit Trunnion Kits for GM LS Series 13702-KIT

Rocker Arm Trunnion Upgrade Kit, Upgrade, GM, Gen. 3/4 LS Cathedral or Rectangle Port Rockers, Set of 16

Part Number: CCA-13702-KIT

4.5 out of 5 stars ( 80 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

COMP Cams Retrofit Trunnion Kits for GM LS Series 13702TL-KIT

Rocker Arm Trunnion Upgrade Kit, Trunnion Upgrade, Includes Installation Tool, Buick, Cadilac, Chevy, GMC, LS, Kit

Part Number: CCA-13702TL-KIT

4.78 out of 5 stars ( 23 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

COMP Cams Retrofit Trunnion Kits for GM LS Series 13704-KIT

Trunnion Upgrade Kit for GM LS7 and Gen V LT1, Set of 16

Part Number: CCA-13704-KIT

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

COMP Cams Retrofit Trunnion Kits for GM LS Series 13704TL-KIT

Trunnion Upgrade for GM LS7 and GEN V LT1 w/ Disassembly Tool, Kit

Part Number: CCA-13704TL-KIT

Not Yet Reviewed

Estimated Ship Date: Dec 17, 2026

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Estimated Ship Date: Dec 17, 2026

Trick Flow® LS Series Retrofit Trunnion Kits TFS-30700500

Rocker Arm Trunnion Upgrade Kit, Needle Bearing, GM, LS1/LS3/LS7, Set of 16

Part Number: TFS-30700500

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

COMP Cams Xtreme Energy Retrofit Cam and Lifter Kits K12-412-8

Cam/Lifters/Valvetrain, Hydraulic Roller Tappet, Adv. Duration 264/270, Lift .487/.495, Chevy, Small Block

Part Number: CCA-K12-412-8

1.5 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

COMP Cams Xtreme Energy Retrofit Cam and Lifter Kits K12-422-8

Cam/Lifters/Valvetrain, Hydraulic Roller Tappet, Adv. Duration 270/276, Lift .495/.502, Chevy, Small Block

Part Number: CCA-K12-422-8

4.33 out of 5 stars ( 6 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

COMP Cams Xtreme Energy Retrofit Cam and Lifter Kits K12-423-8

Cam/Lifters/Valvetrain, Hydraulic Roller Tappet, Adv. Duration 276/282, Lift .502/.510, Chevy, Small Block

Part Number: CCA-K12-423-8

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

COMP Cams Xtreme Energy Retrofit Cam and Lifter Kits CL12-423-8

Cam and Lifters, Hydraulic Roller Tappet, Advertised Duration 276/282, Lift .502/.510, Chevy, Small Block, Kit

Part Number: CCA-CL12-423-8

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

COMP Cams Xtreme Energy Retrofit Cam and Lifter Kits CL12-432-8

Cam and Lifters, Hydraulic Roller Tappet, Advertised Duration 282/288, Lift .510/.520, Chevy, Small Block, Kit

Part Number: CCA-CL12-432-8

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

COMP Cams Xtreme Energy Retrofit Cam and Lifter Kits CL12-433-8

Cam and Lifters, Hydraulic Roller Tappet, Advertised Duration 288/294, Lift .520/.540, Chevy, Small Block, Kit

Part Number: CCA-CL12-433-8

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Dec 18, 2026

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Estimated Ship Date: Dec 18, 2026

COMP Cams Thumpr Retrofit Hydraulic Roller Cam and Lifter Kits CL12-600-8

Cam and Lifters, Hydraulic Roller Tappet, Advertised Duration 283/303, Lift .511/.498, Chevy, Small Block, Kit

Part Number: CCA-CL12-600-8

4.33 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

COMP Cams Xtreme Energy Retrofit Cam and Lifter Kits CL12-422-8

Cam and Lifters, Hydraulic Roller Tappet, Advertised Duration 270/276, Lift .495/.502, Chevy, Small Block, Kit

Part Number: CCA-CL12-422-8

Not Yet Reviewed

Estimated Ship Date: Nov 9, 2026 if shipped by air

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Estimated Ship Date: Nov 9, 2026 if shipped by air

COMP Cams Xtreme Energy Retrofit Cam and Lifter Kits CL12-408-8

Cam and Lifters, Hydraulic Roller Tappet, Advertised Duration 258/264, Lift .480/.487, Chevy, Small Block, Kit

Part Number: CCA-CL12-408-8

Not Yet Reviewed

Estimated Ship Date: Dec 17, 2026

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Estimated Ship Date: Dec 17, 2026

COMP Cams Xtreme Energy Retrofit Cam and Lifter Kits K12-433-8

Cam/Lifters/Valvetrain, Hydraulic Roller Tappet, Adv. Duration 288/294, Lift .520/.540, Chevy, Small Block

Part Number: CCA-K12-433-8

Not Yet Reviewed

Estimated Ship Date: Dec 18, 2026

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Estimated Ship Date: Dec 18, 2026

COMP Cams Magnum Retrofit Cam and Lifter Kits CL12-450-8

Cam and Lifters, Hydraulic Roller Tappet, Advertised Duration 286/286, Lift .560/.560, Chevy, Small Block, Kit

Part Number: CCA-CL12-450-8

Not Yet Reviewed

Estimated Ship Date: Dec 17, 2026

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Estimated Ship Date: Dec 17, 2026

COMP Cams Xtreme Energy Retrofit Cam and Lifter Kits CL12-443-8

Cam and Lifters, Hydraulic Roller Tappet, Advertised Duration 294/300, Lift .540/.562, Chevy, Small Block, Kit

Part Number: CCA-CL12-443-8

Not Yet Reviewed

Estimated Ship Date: Dec 17, 2026

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Estimated Ship Date: Dec 17, 2026

COMP Cams Xtreme Energy Retrofit Cam and Lifter Kits CL12-412-8

Cam and Lifters, Hydraulic Roller Tappet, Advertised Duration 264/270, Lift .487/.495, Chevy, Small Block, Kit

Part Number: CCA-CL12-412-8

Not Yet Reviewed

Estimated Ship Date: Nov 6, 2026

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Estimated Ship Date: Nov 6, 2026

COMP Cams Thumpr Retrofit Hydraulic Roller Cam and Lifter Kits K12-600-8

Cam/Lifters/Valvetrain, Hydraulic Roller Tappet, Adv. Duration 283/303, Lift .511/.497, Chevy, Small Block

Part Number: CCA-K12-600-8

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

COMP Cams Xtreme Energy Retrofit Cam and Lifter Kits K12-443-8

Cam/Lifters/Valvetrain, Hydraulic Roller Tappet, Adv. Duration 294/300, Lift .540/.562, Chevy, Small Block

Part Number: CCA-K12-443-8

Not Yet Reviewed

Estimated Ship Date: Dec 17, 2026

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Estimated Ship Date: Dec 17, 2026

COMP Cams Xtreme Marine Retrofit Cam and Lifter Kits K12-417-8

Cam/Lifters/Valvetrain, Hydraulic Roller Tappet, Adv. Duration 270/276, Lift .495/.503, Chevy, Small Block

Part Number: CCA-K12-417-8

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026

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Estimated Ship Date: Dec 1, 2026

COMP Cams Magnum Retrofit Cam and Lifter Kits CL12-460-8

Cam and Lifters, Hydraulic Roller Tappet, Advertised Duration 304/304, Lift .600/.600, Chevy, Small Block, Kit

Part Number: CCA-CL12-460-8

Not Yet Reviewed

Estimated Ship Date: Dec 17, 2026 if ordered today

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Estimated Ship Date: Dec 17, 2026 if ordered today

COMP Cams Magnum Retrofit Cam and Lifter Kits CL12-420-8

Cam and Lifters, Hydraulic Roller Tappet, Advertised Duration 270/270, Lift .500/.500, Chevy, Small Block, Kit

Part Number: CCA-CL12-420-8

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 17, 2026 if ordered today

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Estimated Ship Date: Dec 17, 2026 if ordered today

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