Chevy ZZ4 350 Partial Crate Engine

GM Performance ZZ4 350 Partial Engines are short blocks that include forged steel cranks and LT1-style pistons and connecting rods. The ZZ4 is a serious performer in any trim level. The Partial engine lets you build your own custom engine on a strong base block and major internals. GM Performance short blocks do not include: cylinder heads, lifters, timing set, camshaft, front cover, oil pump, oil pan, balancer or a flexplate. Purchase those separately from GM Performance or others.

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

Possible Applications*

  • More power for a part time drag racer
  • Build a serious cruiser

*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.

Part Number: 12561723
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

Chevy 350 ZZ4 Partial Crate Engine

Part #:12561723

Installation Notes

  • Intended for pre-1977 street vehicles or all off-road vehicles.
  • Not intended for marine use.
  • NOTE: Distributor with melonized steel gear MUST be used with long blocks and partial engines with steel camshafts, or engine damage will occur.