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COPO 427

Install in My Vehicle

Part Number: 


Displacement (cu in): 

427 cu in (7.0L)

Bore x Stroke (in): 

4.125 x 4.100

The COPO 427 for A Stock competition uses the large-bore cylinder block and high-flow cylinder heads of the LS7 engine and complements them with a high-compression rotating assembly to deliver big power from its large displacement. Its lightweight aluminum block and heads revive the spirit of the original ZL1 all-aluminum 427 big-block that helped forge the COPO legacy in 1969.