Big Block Crate Engine - 502 HO

Whether you use it for your drag car or competition pulling truck, the value driven 502 HO crate engine offers affordable performance. It’s rated at 461 horsepower and 558 lb.-ft. of torque, for pulling power that exceeds anything ever offered from Chevrolet’s production Big-Block engines. It’s real power that only comes from a Big-Block!

To support all that torque, we built the 502 HO with a brand-new, latest generation block casting with four-bolt main cap. We complement that with an all-forged rotating assembly for exceptional strength and durability, while a hydraulic roller  camshaft is used for excellent drivability and a broad performance range. 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—all available from Chevrolet Performance.

INSTALLATION NOTES

• Requires addition of carburetor, fuel pump, starter, distributor and ignition system (not included)
• Clutch linkage bosses are now drilled and tapped. When using cast-iron exhaust manifolds, lower head bolts may need to be replaced with bolts with shorter heads, for clearance
• 502 engines now have a mechanical fuel pump boss! (NOTE: There is a fuel pump lobe behind the boss.)
• Comes with an externally balanced 14" automatic transmission flexplate; Use flywheel P/N 14096987 and 11" clutch assembly for manual transmission applications
• Not intended for marine applications

TECH SPECS

• Part Number: 19433157
• 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 4-bolt main caps
• Crankshaft (P/N 10183723): Forged steel
• Connecting Rods (P/N 19170198): Forged steel, shot peened
• Piston and Ring Kit (P/N 12533507): Forged aluminum
• Intake Manifold (P/N 19131359): Dual plane
• Camshaft Type (P/N 24502611): Hydraulic roller
• Valve Lift (in): .510 intake / .540 exhaust
• Camshaft Duration (@.050 in): 211° intake / 230° exhaust
• Cylinder Heads (P/N 12562920): Iron rectangular port; 118cc chambers
• Valve Size (in): 2.190 intake / 1.880 exhaust
• Compression Ratio: 8.75:1
• Rocker Arms (P/N 19260993): Stamped steel
• Rocker Arm Ratio: 1.7:1
• Water Pump (P/N 12708488): Cast-iron, long-style
• Recommended Fuel: Regular pump
• Ignition Timing: 32° Total @ 4,000 rpm
• Maximum Recommended rpm: 5,500
• Balanced: External
• Flexplate (P/N 10185034): 14"

NOTE: Distributor with melonized steel gear MUST be used with long-blocks and partial engines with steel camshafts, or engine damage will occur.