Chevy ZZ502 Base Kit
Build it yourself with an engine kit. GMPP knows some guys like to do it themselves. That's why they offer the Z502 engine in kit form. This is the same engine setup as the complete ZZ502 engine. ZZ502 engine kit includes aluminum, oval port heads, forged steel crank and rods, forged aluminum pistons, hydraulic roller cam, valve train and valve covers. You must add your favorite intake manifold, carburetor, water pump, distributor and spark plug wires.
NOTE: Intended for pre-1977 street vehicles and all off-road vehicles. Not intended for marine use.
Possible Applications
- Power hungry muscle cars
- Big-block bracket racing
- Massive power
*Applications have not been validated. They are merely suggestions of how you might enjoy your GM Performance Parts crate engine. Some applications may affect engine warranty. See specific warranty information. Some applications may not be emission legal; check state and local ordinances.
| ZZ502/502 BASE ENGINE TECH SPECS: |
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| Part Number: | 124371204 |
| Engine type: | Chevy big-block V-8 |
| Displacement (cu in): | 502 |
| Bore x stroke (in): | 4.47 x 4.00 |
| Block (P/N 10237292): | Cast iron with 4-bolt main caps |
| Crankshaft (P/N 10183723): | Forged steel |
| Connecting rods (P/N 10198922): | 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'c1 intake / 234'c1 exhaust |
| Cylinder heads (P/N 12363390): | Aluminum oval port; 110cc chambers |
| Valve size (in): | 2.25 intake / 1.88 exhaust; stainless steel |
| Compression ratio: | 9.6:1 |
| Rocker arms (P/N 12368082): | Stamped steel |
| Rocker arm ratio: | 1.7:1 |
| Recommended fuel: | 92 octane |
| Ignition timing: | 8'c1 BTDC @ 800 rpm; 36'c1 total @ 5000 rpm |
| Maximum rpm: | 5800 |
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Part #:12371204
Installation Notes
- NOTE: Distributor with melonized steel gear MUST be used with long blocks and partial engines with steel camshafts, or engine damage will occur. GMPP distributor P/N 93440806 is recommended.
- Clutch linkage boss is cast into block, but must be drilled and tapped. When using cast iron exhaust manifolds, lower head bolts may need to be replaced with bolts with shorter heads, for clearance.
- Requires electric fuel pump because Gen VI block has no mechanical pump boss
- Intended for pre-1977 street vehicles or all off-road vehicles.
- Not intended for marine applications.
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