Chevy ZZ502/502 Deluxe

GMPP also offers the ZZ502/502 in an assembled version. The deluxe version includes a carburetor to oil pan engine assembly ready to roar with 502 horsepower and 567 lb ft of torque. It's massive big block rompin power ready to rock in your favorite street or muscle car. It's ready to install. You add the gas and 12 volts to bring it alive.

Aluminum oval port heads with big valves flow air to the giant big block bores and 4 inch stroke crank. The forged crankshaft is held in place with a four bolt main Gen VI engine block. The rest of the rotating assembly is forged steel with forged aluminum 9.6:1 pistons.

Possible Applications

  • Over 500 horsepower
  • Great drag racing foundation
  • Hot rod rumble

*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:
Part Number: 12496962
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; stain less steel
Compression ratio: 9.6:1
Rocker arms (P/N 12368082): Stamped steel
Rocker arm ratio: 1.7:1
Distributor (P/N 93440806): HEI type
Carburetor (P/N 12366996): 850 cfm
Water pump (P/N 14058915): Aluminum, short-style
Spark plugs & wires: Included
Starter (P/N 9000852): Included
Flexplate (P/N 10185034): 14"
Recommended fuel: 92 octane
Ignition timing: 8'c1 BTDC @ 800 rpm; 36'c1 total @ 5000 rpm
Maximum rpm: 5800

ZZ 505 Deluxe Engine Image

Part #: 12496962

zz 502 dyno image

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.
  • Carburetor and starter not installed because of crate fitment.
  • 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
  • Comes with a 14" automatic transmission flexplate.
  • Intended for pre-1977 street vehicles or all off-road vehicles.
  • Not intended for marine applications.