Chevy ZZ4 350 Base Crate Engine

GM Performance engines are popular. Some, like the ZZ4 350 Turn-Key crate engine, are more popular than others. In fact, it's one of the most popular crate engines. The ZZ4 carries a forged crankshaft, aluminum cylinder heads, hypereutectic pistons, hydraulic roller camshaft and lifters. GM Performance ZZ4's have Corvette-derived high-performance heads with high velocity intake runners and D-shaped exhaust ports for serious flow at most RPM levels.

GM Performance ZZ4 350 crate engines are shipped with an aluminum dual-plane intake manifold, damper, cast iron water pump, HEI distributor and flexplate. You supply your carburetor, starter, fuel pump, and plug wires to complete the engine build!

NOTE: Intended for pre-1977 street vehicles and all off-road vehicles. Not intended for marine use.

Possible Applications*

  • More speed and power
  • Build a serious cruiser
  • For a classic Chevy with some new thump

*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.

ZZ4 350 BASE TECH SPECS:
Part Number: 24502609
Engine type: Chevy small-block V-8
Displacement (cu in): 350
Bore x stroke (in)cf6 : 4.00 x 3.48
Block (P/N 10105123): Cast iron with 4-bolt main caps
Crankshaft (P/N 12556307): Forged steel
Connecting rods (P/N 10108688): Powdered metal steel
Pistons (P/N 10159436): High-silicon aluminum with offset pins
Camshaft type (P/N 10185071): Steel hydraulic roller
Camshaft lift (in): .474 intake / .510 exhaust
Camshaft duration (@.050 in): 208'c1 intake / 221'c1 exhaust
Cylinder heads (P/N 12556463): Aluminum; 58cc chambers
Valve size (in): 1.94 intake / 1.50 exhaust
Compression ratio: 10:1
Rocker arms (P/N 10089648): Stamped steel
Rocker arm ratio: 1.5:1
Recommended fuel: 92 octane
Ignition timing: 10'c1 BTDC @ 800 rpm, cf0 32'c1 total @ 4000 rpm with vacuum advance disconnected
Maximum rpm: 5800

Chevy 350 ZZ4 Base Crate Engine

Part #:24502609

Installation Notes

  • Comes with 12.75" externally balanced automatic transmission flexplate; change to externally balanced flywheel for manual transmission applications.
  • Intended for pre-1977 street vehicles or all off-road vehicles.
  • Not intended for marine use.
  • Some assembly required.
  • NOTE: Distributor with melonized steel gear MUST be used with long blocks and partial engines with steel camshafts, or engine damage will occur.