Chevrolet Performance 502 HO Crate Engine

$9,682.31 $7,552.20

  • 461 hp @ 5,100 rpm/558 lb.-ft. @ 3,400 rpm
  • All-forged rotating assembly with four-bolt mains
  • 8.75:1 comp. ratio is suitable for all altitudes and loads
  • Aluminum dual-plane intake manifold installed

Have your engine dyno tested by one of our professional engine builders to ensure everything is properly broken in. We can dyno your engine with your components to make sure everything is working harmoniously before shipping you the whole assembly drained and ready to install.

SKU: 12568778 Categories: , Tag:

502 HO Chevrolet Performance Crate Engine

P/N 12568778

461 hp @ 5,100 rpm / 558 lb.-ft. @ 3,400 rpm

502 HO 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 4-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; 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 19168606): Cast-iron, long-style
Flexplate (P/N 10185034): 14″
Recommended Fuel: 92 octane
Ignition Timing: Base 8° BTDC, 30° Total
Maximum Recommended rpm: 5,500
Balanced: External

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!
– Comes with an externally balanced 14″ automatic transmission flexplate. Use flywheel P/N 14096987 and 11″ clutch assembly for manual transmission applications
– Designed for pre-1976 street vehicles or any off-road vehicle
– Not intended for marine applications

Note: Distributor with melonized steel gear MUST be used with engines with steel camshafts, or engine damage will occur. GMPP HEI distributor P/N 93440806 is recommended.

Weight 602 lbs



502 HO Crate Engine

12568778 Chevrolet Engine

An Affordable Powerhouse!

What will you do with 461 hp and 558 lb.-ft. of torque from the Chevrolet Performance 502 HO? Heck, it makes nearly 500 lb.-ft. by 1,500 rpm, so it has all the low-rpm grunt you can use! The 502 HO is all about torque.

GM builds this crate motor with a brand-new, latest-generation four-bolt main block casting, and adds an all-forged rotating assembly as well as a hydraulic roller camshaft for excellent drivability and performance. The 8.75:1 compression ratio is suitable for pump gas.

This GM big-block 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.

Click here to download installation information.

Chevrolet Performance Crate Engines include a 24-month or 50,000-mile (80,000 kilometer) limited warranty.

Click here for more detailed warranty information.


There are no reviews yet.

Be the first to review “Chevrolet Performance 502 HO Crate Engine”