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 Rocker Arms SUM-141550

Summit Racing™ LS Rocker Arms SUM-141550

Rocker Arm, 1.7 Ratio, Roller Fulcrum, Ductile Iron, Chevy GM, LS/LSX, Gen III/IV, No Offset Each

Part Number: SUM-141550

4.57 out of 5 stars ( 7 )

Estimated Ship Date: Tomorrow

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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

4.33 out of 5 stars ( 70 )

Estimated Ship Date: Tomorrow

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Summit Racing™ LS Rocker Arm Bolts SME-143005

Rocker Arm Bolt, Steel, Black Oxide, 8mm x 1.25, LS1/LS6 Style Rocker Arms, Set of 8

Part Number: SME-143005

4.71 out of 5 stars ( 14 )

Estimated Ship Date: Tomorrow

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Summit Racing™ LS Rocker Arms SME-143021

Rocker Arm, Assembled, Ductile Iron, Roller Fulcrum Type, 1.7 Ratio, Narrow Style, Chevy, LS, Each

Part Number: SME-143021

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Summit Racing™ LS Rocker Arms SME-K-143021

Rocker Arms, Roller Fulcrum, Pedestal, 1.7 Ratio, Ductile Iron, Chevy, Small Block LS, Set of 16

Part Number: SME-K-143021

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Summit Racing™ LS Rocker Arms SUM-141551

Rocker Arm, 1.7 Ratio, Roller Fulcrum, Ductile Iron, Intake Only,Chevy GM, LS/LSX, Gen III/IV, Ofset, Each

Part Number: SUM-141551

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Summit Racing™ LS Rocker Arms SME-143023

Rocker Arm, LS, Roller Fulcrum, 1.7 Ratio, Ductile Iron, Pedestal Mount, Chevy, 6.2L LS, Each

Part Number: SME-143023

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Summit Racing™ LS Rocker Arms SME-K-143023

Rocker Arms, Roller Fulcrum, Pedestal, 1.7 Ratio, Ductile Iron, Chevy, 6.2L LS, Rectangle Port Heads, Trunion Upgrade, Set of 16

Part Number: SME-K-143023

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Summit Racing™ LS Rocker Arms SME-14301M

Rocker Arm, Moly Coated, Ductile Iron, Roller Fulcrum Type, 1.7 Ratio, Narrow Style, Chevy, LS, Each

Part Number: SME-14301M

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Summit Racing™ LS Rocker Arms SME-14303M

Rocker Arm, LS, Moly Coated Rocker Body, Roller Fulcrum Style, 1.7 Ratio, Ductile Iron, Pedestal Mount, Chevy, 6.2L

Part Number: SME-14303M

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Summit Racing™ Pro LS Upgraded Rocker Arms SUM-141556

Rocker Arms, Trunnion Upgrade, Assembled, Cast Steel, 1.7 Ratio, Straight Body, Cathedral Port, Chevy, LS1, LS2, LS6, LQ4, LQ9, Set of 16

Part Number: SUM-141556

4.06 out of 5 stars ( 17 )

Estimated Ship Date: Tomorrow

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Summit Racing™ Pro LS Upgraded Rocker Arms SUM-141554

Rocker Arms, Roller Bearing Trunnion, L92/LS9/LS3, Assembled, Heavy Duty Cast Steel, 1.7 Ratio, Rectangle Port, Chevy, Set of 16

Part Number: SUM-141554

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Tomorrow

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Summit Racing™ Billet LS Rocker Stands SUM-01-7005

Rocker Arm Mounting Stand, Pedestal, Billet Aluminum, Chevy, LS3, Pair

Part Number: SUM-01-7005

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Tomorrow

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Summit Racing™ Billet LS Rocker Stands SUM-01-7004

Rocker Arm Mounting Stand, Pedestal, Billet Aluminum, Chevy, LS1, Pair

Part Number: SUM-01-7004

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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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

4.71 out of 5 stars ( 58 )

Estimated Ship Date: Tomorrow

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Summit Racing™ Pro LS Upgraded Rocker Arms SUM-141555

Rocker Arms, Roller Bearing Trunnion, LS-7, Assembled, Heavy Duty Cast Steel, 1.8 Ratio, Rectangle Port, Chevy, Set of 16

Part Number: SUM-141555

2.5 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Summit Racing™ Pro LS Upgraded Rocker Arms SUM-141554I-1

Rocker Arm, Heavy Duty, 1.7 Ratio, Roller Fulcrum, Ductile Iron, Offset Intake Only, L92/LS9/LS3, GEN IV LS GM Each

Part Number: SUM-141554I-1

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Summit Racing™ OE Rocker Arms for LS Series Bearing Upgrade Kits SME-143000-1

Rocker Arm, Non Roller, Pedestal Style, 1.7 Ratio, Steel, for LS Series Pivot Bearing Upgrade Only, Each

Part Number: SME-143000-1

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Summit Racing™ Pro LS Upgraded Rocker Arms SUM-141555E-1

Rocker Arms, Roller Bearing Trunnion, LS-7, Assembled, Steel, 1.8 Ratio, Exhaust, Rectangle Port, Chevy, Each

Part Number: SUM-141555E-1

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Summit Racing™ OE Rocker Arms for LS Series Bearing Upgrade Kits SME-143000

Rocker Arms, Steel, Pedestal Mount, 1.7 Ratio, Upgrade, Cadillac, Chevy, GMC, Pontiac, Set of 8

Part Number: SME-143000

3.89 out of 5 stars ( 9 )

Estimated Ship Date: Tomorrow

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Summit Racing™ Pro LS Upgraded Rocker Arms SUM-141554E-1

Rocker Arm, Heavy Duty, 1.7 Ratio, Roller Fulcrum, Ductile Iron, Catherdral Int. & Exh L92/LS9/LS3 exh. only, GM, Each

Part Number: SUM-141554E-1

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Summit Racing™ Pro LS Upgraded Rocker Arms SUM-141555I-1

Rocker Arms, Roller Bearing Trunnion, LS-7, Assembled, Steel, 1.8 Ratio, Offset Intake, Rectangle Port, Chevy, Each

Part Number: SUM-141555I-1

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Summit Racing™ Roller Rocker Arms for LS1/LS6 SUM-G6980

Rocker Arms, Pedestal Mount, Full Roller, Aluminum, 1.7 Ratio, Chevy, LS, Set of 16

Part Number: SUM-G6980

4.05 out of 5 stars ( 22 )

Estimated Ship Date: Tomorrow

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Summit Racing™ Replacement Rocker Arm Trunnion Bushings SUM-141560-2

Rocker Arm Replacement Parts, Trunnion Bushing, Chevy, Pair

Part Number: SUM-141560-2

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Summit Racing™ Replacement Rocker Arm Snap Rings SUM-141560-3

Rocker Arm Replacement Parts, Snap Ring, Retainer, Chevy, Pair

Part Number: SUM-141560-3

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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