< Previous
  • ZZ 502 Base Big Block Crate Engine
Next >

MSRP

$9,333

Part No.

12496963

Find a Store
Near You

For Off-Road &

For Off-Road &
STREET

6 Select
Available Mods

Power

Power
502
hp @ 5200 rpm

The DIY foundation for big torque

It’s simple: We offer the ZZ502/502 Base crate engine for builders who want the super-strong bottom end and high-flow aluminum oval-port cylinder heads, but also want to finish the engine their way.

The ZZ502/502 Base engine uses our new cylinder block casting that is stronger and better suited to high-performance combinations. A forged steel crankshaft, forged rods, and forged pistons form the reciprocating assembly, with a smooth-operating hydraulic roller camshaft delivering big 0.527/0.544-inch lift. The lightweight aluminum heads boast 110-cc combustion chambers and big, 2.25-inch intake and 1.88-inch exhaust valves.

We rate the ZZ502/502 Base engine at 502 horsepower and 567 lb-ft of torque when it is finished with Chevrolet Performance aluminum intake manifold (P/N 12363406) and Holley 870-cfm carburetor (P/N 19170094). The other parts you need to complete the engine — including chrome dress-up parts — are available from your dealer and chevroletperformance.com.

The ZZ502/502 Base is a great foundation. It’s up to you to make the most of it.

ZZ502/502 BASE DYNO

Click on the slider to see the torque and power ratings change with rpm.*

*Approximate values shown.

ZZ502/502 BASE TECH SPECS

Part Number:
12496963
 
 
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 12366543):
Hydraulic roller
Camshaft Lift (in.):
.527 intake / .544 exhaust
Camshaft Duration (@.050 in.):
224° intake / 234° exhaust

 
 

Cylinder Heads (P/N 12363390):
Aluminum oval port; 110-cc chambers
 
 
Valve Size (in.):
2.250 intake / 1.880 exhaust; stainless
Compression Ratio:
9.6:1
Rocker Arms (P/N 12368082):
Stamped steel
Rocker Arm Ratio:
1.7:1
Recommended Fuel:
92 octane
Ignition Timing:
Base 8° BTDC, 30° total
Maximum Recommended rpm:
5800
Balanced:
External

OWNER RESOURCES

Already own one, but lost some of the paperwork? We’ve got you covered with downloads and links for some of the more important documents below. You’ll find everything from the vital data about your engine’s capabilities to how to install it into your build, even all of the warranty information should you need to make a claim. And don’t forget, the best way we can make sure to get you the latest information on your specific part is to tell us which one you have by registering your engine. No matter what stage of your build you’re in — from shopping for the right part to that part having turned in a few miles — we have the information you need.

< Previous
  • ZZ 502 Base Big Block Crate Engine Installation

    INSTALLATION NOTES

    • 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
    • The 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
Next >

FINISH OFF YOUR CRATE ENGINE WITH THESE SELECT PARTS

Download a catalog for a full listing of components and related parts.

SuperMatic 4L85-E Four-Speed
Transmission • P/N 19154550

Transmission Controller • P/N 19212657

High-Rise Intake Manifold, Rectangular Port • P/N 19131359

Serpentine Accessory Drive Belt System With Air Conditioning • P/N 19172805

Aluminum Water Pump, Short-Style • P/N 19168602

Carburetor, Holley 850-cfm • P/N 19170095

  • 1 Performance MSRP The Manufacturer's Suggested Retail Price excludes tax, shipping and installation.
Close

Destination Freight Charges

To allow you to do an accurate price comparison with prices featured on other Internet sites, GM provides Internet pricing both with and without the Destination Freight Charge (see prices including Destination Freight Charge below). To get full pricing details, go to our Build Your Own section.