With 461 horsepower and 558 lb-ft of torque, our 502 HO crate engine has power on tap for every need — whether it’s a ’69 Chevelle at the drag strip or the Suburban that towed it there.
The 502 HO is all about torque and it hovers at the 558 lb-ft mark at only 3400 rpm and arcs gently above the 500 lb-ft level by 2800 rpm, remaining there through 4200 rpm. All those axle-twisting pound-feet are rooted in a stronger, updated four-bolt cylinder block that houses a forged steel crankshaft, forged and shot-peened rods, and forged aluminum pistons. In other words, it’s a super-stout assembly that is as durable as it is powerful.
Iron, rectangular-port cylinder heads keep the 502 HO affordable, and our crate engine assembly includes an aluminum dual-plane intake manifold, a water pump, 14-inch flexplate, balancer, and more. You add the carburetor, starter, and ignition system.
Part Number: 12568778
Engine Type: Chevy Big-Block V-8
Displacement (cu. in.): 502
Bore x Stroke (in.): 4.470 x 4.000
Block (P/N 19170540): Cast-iron with four-bolt main caps
Crankshaft (P/N 10183723): Forged steel
Connecting Rods (P/N 19170198): Forged steel, shot peened
Pistons (P/N 12533507): Forged aluminum
Camshaft Type (P/N 24502611): Hydraulic roller
Camshaft Lift (in.): .510 intake / .540 exhaust
Camshaft Duration (@.050 in.): 211° intake / 230° exhaust
Cylinder Heads (P/N 12562920): Iron rectangular port; 118-cc chambers
Valve Size (in.): 2.190 intake / 1.880 exhaust
Compression Ratio: 8.75:1
Rocker Arms (P/N 12523976): Stamped steel
Rocker Arm Ratio: 1.7:1
Water Pump (P/N 19168606): Cast-iron, long-style
Flexplate (P/N 10185034): 14"
Recommended Fuel: 92 octane
Ignition Timing: Base 8° BTDC, 30° Total
Maximum Recommended rpm: 5500
Find everything from the vital data about your engine’s capabilities to how to install it into your build.
*The Manufacturer's Suggested Retail Price excludes, tax, title, license, dealer fees and optional equipment. Click here to see all Chevrolet vehicles' .
Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance Parts may not meet Federal Motor Vehicle Safety Standards and emissions regulations and should not be operated on public roads. Chevrolet Performance customers are responsible for ensuring their use of Chevrolet Performance complies with applicable federal, state, and local laws, regulations, and ordinances. Many parts intended for racing or other “off-highway” use are not designed or tested for crashworthiness or to meet the safety needs of the motoring public, and may adversely affect the original intended performance or handling characteristics of the vehicle. These parts are designed and intended to be used with experts supervising their installation and use, to help assure the proper and safe operation of the vehicle.
The Manufacturer's Suggested Retail Price excludes tax, shipping and installation.