ALL PARTIAL ENGINE

Part Number: 12561723

ALL  PARTIAL ENGINE - Part Number 12561723
Partial Engine ZZ4. Build your own saturday night special with this replacement partial engine for all ZZZ-series engines, including the ZZ4 on which the 350/400 Limited Late Model engine is based. This partial engine includes the ZZ4's forged steel crankshaft and comes with LT1-style pistons and connecting rods. It does not include the camshaft, cylinder heads, lifters, timing set, front cover, oil pump, oil pan, balancer or flexplate. All parts needed to complete the engine assembly are available from your GMPP dealer.
ZZ4

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