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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.
Pro SBC Stage 4 Hyd. Flat-Tappet 4/7 Firing Order Swap Cam, 228/236 Dur., 108 LSA + 2 Adv, .473/.495 1.5 Ratio, .505/.528 1.6 Ratio, 2000-6200 Range
Part Number: SUM-1203
Estimated Ship Date: Monday 4/20/2026 if shipped by air
Estimated Ship Date: Monday 4/20/2026 if shipped by air
BUILD IT WITH SUMMIT!
Summit Racing™ Pro SBC 4-7 Swap Cam and lifter kits SUM-K1203
Cam and Lifter kit, Pro SBC Stage 4 Hyd. Flat-Tappet 4/7 Firing Order Swap, 228/236 Dur., 108 LSA + 2 Adv, .473/.495 1.5 Ratio, 2000-6200 Range
Part Number: SUM-K1203
Estimated Ship Date: Monday 4/20/2026 if shipped by air
Estimated Ship Date: Monday 4/20/2026 if shipped by air
Cylinder Heads, AFR 200cc SBC Eliminator Racing Heads, Assembled, Cast Aluminum, Solid Roller Camshaft, Chevy, Sold as a Pair
Part Number: AFR-1203
Not Yet Reviewed
Estimated Ship Date: Jun 4, 2026 if ordered today
Estimated Ship Date: Jun 4, 2026 if ordered today
S&S Cycle M-Series Piston Cooling Jet Kit
Part Number: SSY-310-1203
Not Yet Reviewed
Estimated Ship Date: May 11, 2026 if ordered today
Estimated Ship Date: May 11, 2026 if ordered today
Dual Spring 300 Series Retainer - Retainer for PAC-1202 & 1203 Valve Springs. Lock angle: 7 degree
Part Number: RSC-PAC-R334
Not Yet Reviewed
Estimated Ship Date: Jun 9, 2026 if ordered today
Estimated Ship Date: Jun 9, 2026 if ordered today
Valve Springs, 1200 Series Circle Track, Dual, 1.260 in. Outside Diameter, 610 lb/in, 0.624 in. Inside Diameter, Set of 16
Part Number: RSC-PAC-1203-16
Not Yet Reviewed
Estimated Ship Date: Jun 12, 2026 if ordered today
Estimated Ship Date: Jun 12, 2026 if ordered today
Dual Spring 300 Series Retainer - Retainer for PAC-1202 & 1203 Valve Springs. Lock angle: 7 degree
Part Number: RSC-PAC-R334-16
Not Yet Reviewed
Estimated Ship Date: Jun 1, 2026 if ordered today
Estimated Ship Date: Jun 1, 2026 if ordered today
TIMING BELT IDLER Replacement SAAB-9-2X(2005); SUBARU-BAJA, FORESTER, IMPREZA, LEGACY, OUTBACK (12-03)
Part Number: GMB-460-9740
Not Yet Reviewed
Estimated Ship Date: May 18, 2026 if ordered today
Estimated Ship Date: May 18, 2026 if ordered today
PB 1203 PKG
Part Number: BRO-2121001
Not Yet Reviewed
Estimated Ship Date: May 15, 2026 if ordered today
Estimated Ship Date: May 15, 2026 if ordered today
Valve Spring, 1200 Series Circle Track, Dual, 1.260 in. Outside Diameter, 610 lb/in, 0.624 in. Inside Diameter, Each
Part Number: RSC-PAC-1203
Not Yet Reviewed
Estimated Ship Date: Jun 1, 2026 if ordered today
Estimated Ship Date: Jun 1, 2026 if ordered today
RING SET, PLAIN
Part Number: MAH-3011203
Not Yet Reviewed
Estimated Ship Date: May 21, 2026 if ordered today
Estimated Ship Date: May 21, 2026 if ordered today
RING SET, PLAIN
Part Number: MAH-3021203
Not Yet Reviewed
Estimated Ship Date: May 21, 2026 if ordered today
Estimated Ship Date: May 21, 2026 if ordered today
Timing Cover Bolts, 8740 Chromoly, Black, Hex Head, Buick, 5.7L, Kit
Part Number: ARP-120-3202
Estimated Ship Date: Monday 4/20/2026 if shipped by air
Estimated Ship Date: Monday 4/20/2026 if shipped by air
Rocker Arm Adjusting Screw
Part Number: PQX-1203188-01
Estimated Ship Date: Monday 4/20/2026 if shipped by air
Estimated Ship Date: Monday 4/20/2026 if shipped by air
Camshaft, Retrofit, Hydraulic Roller Tappet, Advertised Duration 282/288, Lift .589/.600, Chevy, Big Block
Part Number: HRS-120325-10
Not Yet Reviewed
Estimated Ship Date: Jun 9, 2026 if ordered today
Estimated Ship Date: Jun 9, 2026 if ordered today
FULCRUM, GM LS Series (1) Each OEM Rocker Arm
Part Number: PQX-1203641
Not Yet Reviewed
Estimated Ship Date: Monday 4/20/2026 if shipped by air
Estimated Ship Date: Monday 4/20/2026 if shipped by air
Harmonic Balancer, Street Performance, Ford, Mercury, 302, Each
Part Number: PBB-PB1203ST
Not Yet Reviewed
Estimated Ship Date: Apr 29, 2026 if ordered today
Estimated Ship Date: Apr 29, 2026 if ordered today
Cylinder Head Fasteners, High Performance Series Cylinder Head Bolt Kits, Hex, Chromoly, Black Oxide, Washers, Buick, 5.7L, Kit
Part Number: ARP-120-3601
Not Yet Reviewed
Estimated Ship Date: Monday 4/20/2026 if shipped by air
Estimated Ship Date: Monday 4/20/2026 if shipped by air
ROCKER ARM STUDS 3/8", 1.75" stud height, Each
Part Number: PQX-1203750
Not Yet Reviewed
Estimated Ship Date: Jun 19, 2026 if ordered today
Estimated Ship Date: Jun 19, 2026 if ordered today
Water Pump Pulley, V-belt, 2-groove, Billet Aluminum, Clear Powdercoated, 6.5 in. o.d., Buick, 455, Long, Each
Part Number: MCH-12032
Estimated Ship Date: May 27, 2026 if ordered today
Estimated Ship Date: May 27, 2026 if ordered today
Camshaft, Retrofit, Hydraulic Roller Tappet, Advertised Duration 282/288, Lift .589/.600, Chevy, Big Block
Part Number: HRS-120325-12
Not Yet Reviewed
Estimated Ship Date: Jun 10, 2026 if ordered today
Estimated Ship Date: Jun 10, 2026 if ordered today
Need It Sooner? We recommend these similar substitute parts:
Crankshaft Pulley, V-Belt, 2-Groove, Aluminum, Clear Coat, Buick, 400, 430, 455, Each
Part Number: MCH-12031
Not Yet Reviewed
Estimated Ship Date: May 27, 2026 if ordered today
Estimated Ship Date: May 27, 2026 if ordered today
Rocker Arm Pedestal
Part Number: PQX-1203515
Not Yet Reviewed
Estimated Ship Date: Monday 4/20/2026 if shipped by air
Estimated Ship Date: Monday 4/20/2026 if shipped by air
Rocker Arm Spacer
Part Number: PQX-1203181-180
Not Yet Reviewed
Estimated Ship Date: Jun 19, 2026 if ordered today
Estimated Ship Date: Jun 19, 2026 if ordered today
Rocker Arm Shaft Hold-Down Kits,FORD 302-351W, Rocker Arm Fastener Kit for PRW 333020x Series rocker system, 4135 Alloy Steel
Part Number: PQX-1203023
Not Yet Reviewed
Estimated Ship Date: Jun 22, 2026 if ordered today
Estimated Ship Date: Jun 22, 2026 if ordered today
