502 HO Big-Block Chevy Crate 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.
502 HO Chevy Performance Crate Engine
450 hp @ 5,250 rpm / 550 lb.-ft. @ 3,500 rpm
An Affordable Powerhouse!
What will you do with 450 hp and 550 lb.-ft. of torque from the Chevrolet Performance 502 HO big block crate engine? Whether you use it on the street, drag strip or for towing, its performance range offers unlimited possibilities. In fact, it makes nearly 500 lb.-ft. by only 1,500 rpm, meaning it has all the low-rpm grunt you can use!
The 502 HO is all about torque. Chevy Performance builds this crate motor with a brand-new, latest-generation block casting with four-bolt main caps, and complements it with an all-forged rotating assembly for exceptional strength and durability. A hydraulic roller camshaft is used for excellent drivability and a broad performance range; and an 8.75:1 compression ratio is suitable for regular gasoline at all altitudes and engine loads.
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.
12568778 Chevrolet Crate Motor
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 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: 5,500
• 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.
Chevrolet Performance Crate Engines include a 24-month or 50,000-mile (80,000 kilometer) limited warranty.
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