Engines & Components
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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...
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 daily driver.
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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
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
BUILD IT WITH SUMMIT!
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
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Rocker Arm; Ultra Pro Magnum; Rocker Arm; Stud 7/16 in. Ratio 1.7 in.; Chevy Big Block 396-454 cid; 16 pc.
Part Number: CCA-1620-16
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
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
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Rocker Arm Trunnion Upgrade Kit, Needle Bearing, Chevy, LS, Kit
Part Number: BTC-TK002NB
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Rocker Arms, Super-Street, Stud Mount, Full Roller, Aluminum, Narrow Body, 1.5 Ratio, Fits 3/8 in. Stud, Chevy, Small Block, Set of 16
Part Number: PRO-66907
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Rocker Arms, 1.6 Ratio, 7/16 in. Stud, Full Roller Design, Aluminum, Small Ford and 351W, Set of 16
Part Number: TFS-51400520
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Rocker Arms, Stud Mount, Full Roller, Aluminum, 1.6 Ratio, Fits 3/8 in. Stud, Ford, Small Block/351W, Set of 16
Part Number: SUM-G6940B
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Rocker Arms, Fits 7/16 in. Stud, Full Roller, Steel, 1.70 Ratio, Chevy, Big Block, Set of 16
Part Number: CCA-1820-16
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Rocker Arms, 1.5 Ratio, 3/8 in. Stud, Full Roller, Stainless Steel, Natural, Small Chevy, SBC, Set of 16
Part Number: SUM-G6990
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Rocker Arm, Replacement, Stamped Steel, Chrysler, Dodge, Jeep, Ram, Volkswagen, V6, Each
Part Number: MEL-MR-1332
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Rocker Arms, Shaft, Roller, 1.7 Ratio, for LS3 Heads, Chevy, 6.2L, Kit
Part Number: BTC-S0432
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Rocker Arm Trunnion Upgrade Kit, Needle Bearing Style, Chevy, Small Block LS, Kit
Part Number: BTC-BTRTK001
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Rocker Arms, Roller Tip/Bronze Bushed Rockers, 1.76 Ratio, Aluminum, Shafts, End Supports, Ford, Big Block, FE, Kit
Part Number: CSP-S4006BKE
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Rocker Arms, 1.7 Ratio, 7/16 in. Stud, Full Roller, Stainless Steel, Polished, Big Block Chevy, BBC, Set of 16
Part Number: SUM-G6995
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Rocker Arms, Stud Mount, Roller Tip, Grooved Pivot Balls, Stamped Steel, 1.5 Ratio, Fits 3/8 in. Stud, Chevy, Small Block, Set of 16
Part Number: SUM-141506
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Rocker Arms, Stud Mount, Full Roller, Aluminum, 1.7 Ratio, Fits 7/16 in. Stud, Chevy, Big Block, Set of 16
Part Number: SUM-G6930B
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Rocker Arms, Heavy-Duty Roller Rockers, Full Roller, 1.5 Ratio, Aluminum, Orange Anodized, Chrysler, Dodge, Plymouth, Big Block, Kit
Part Number: CSP-S70015KE
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Rocker Arms, 1.73 Ratio, 7/16 in. Stud, Full Roller Design, Aluminum, Ford 351C, 351M/400, and 429/460, Set 16
Part Number: TFS-53400621
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Rocker Arms, Ultra Pro Magnum, 7/16 in. Stud Mount, Chromoly Steel, 1.6 Ratio, Ford, Small Block, Set of 16
Part Number: CCA-1632-16
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Rocker Arms, Stud Mount, Roller Tip, Chromoly Steel, 1.52 Ratio, Fits 3/8 in. Stud, Chevy, Small Block, Set of 16
Part Number: CCA-1412-16
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Rocker Arm, Standard Replacement, Steel, Chevrolet, LS, Each
Part Number: MEL-MR1341
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Rocker Arms, Roller Tip, Cast Steel, 3/8 in. Stud Mount, 1.5 Ratio, Polylocks, Chevy, Small Block, Set of 16
Part Number: SUM-141706PL
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Rocker Arms, Roller Fulcrum, Shaft Mounting Style, 1.7 Ratio, Steel, Chevrolet, 5.7L, 6.0L, Kit
Part Number: BTC-S0410
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Rocker Arms, Stud Mount, Full Roller, Aluminum, 1.5 Ratio, Fits 3/8 in. Stud, Chevy, Small Block, Set of 16
Part Number: SUM-G6905
Estimated Ship Date: Monday 3/16/2026 if shipped by air
Estimated Ship Date: Monday 3/16/2026 if shipped by air
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