Chevrolet Performance 502 C.I. Big Block Crate Engine 461HP

The Chevrolet Performance 502HO crate engine (19433157) delivers 461 horsepower and 558 lb.-ft. of torque in a proven big-block package built for strong low-end performance and long-term durability. This 502 C.I. engine produces substantial torque just off idle, making it well suited for street driving, towing, and heavy vehicles. A cast-iron 4-bolt main block and forged rotating assembly provide the strength needed to handle sustained loads, while the hydraulic roller camshaft offers smooth drivability and a broad power curve. The 8.75:1 compression ratio allows operation on regular pump fuel without sacrificing torque output. This crate engine includes an aluminum dual-plane intake manifold, cast-iron long-style water pump, 14” flexplate, and balancer to simplify final assembly.

Features and Benefits:
- Engine Type: Chevy Big-Block V8
- Displacement (cu in): 502
- Bore x Stroke (in): 4.470” x 4.000”
- Block: Cast-iron with 4-bolt main caps
- Crankshaft: Forged steel
- Connecting Rods: Forged steel, shot peened
- Pistons: Forged aluminum
- Camshaft Type: Hydraulic roller
- Camshaft Lift (in): .510” intake / .540” exhaust
- Camshaft Duration (@.050 in): 211 degrees intake / 230 degrees exhaust
- Cylinder Heads: Iron rectangular port, 118cc chambers
- Valve Size (in): 2.190” intake / 1.880” exhaust
- Compression Ratio: 8.75:1
- Rocker Arms: Stamped steel
- Rocker Arm Ratio: 1.7:1
- Intake Manifold: Aluminum dual plane
- Water Pump: Cast-iron, long-style
- Flexplate: 14”
- Recommended Fuel: Regular pump gasoline
- Ignition Timing: 32 degrees total at 4,000 rpm
- Maximum Recommended RPM: 5,500
- Balanced: External

Additional Notes:
- Requires carburetor, fuel pump, starter, distributor, and ignition system (not included).
- Clutch linkage bosses are drilled and tapped. When using cast-iron exhaust manifolds, lower head bolts may require shorter-head bolts for clearance.
- Equipped with mechanical fuel pump boss and fuel pump lobe.
- Includes externally balanced 14” automatic transmission flexplate. For manual transmission applications, use a flywheel and 11” clutch assembly.
- Distributor with melonized steel gear must be used with steel camshaft applications.
- Not intended for marine applications.
- Designed for pre-1976 street vehicles or off-road use only.

Vehicle Fitment:
- 1960-1987 Chevy/GMC C10
- 1988-1998 Chevy C/K

*Only for use on pre-pollution controlled vehicles: Designed for pre-1976 street vehicles or any off-road vehicle.