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502 HO

502 HO

SKU: 19433157

Affordable Big-Block performance with huge torque and 461 hp


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.

  • Horsepower

    461 HP

  • Torque

    558 LB-FT

  • Tech Specs

    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

    Balanced: External

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