COPO 427 CRATE ENGINE, 425 HP ^Sale

Engine, Copo 427 Crate Engine, 425 HP.  

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.

Specs:

Displacement: 427 cu in (7.0L)

Compression Ratio: 13.5:1

Cylinder Block: LS7 cast aluminum

Bore x Stroke (in.): 4.125 x 4.100

Crankshaft: Forged Steel

Connecting Rods: Forged Steel

Pisons: Forged Dome

Cylinder Heads: LS7 Aluminum

Induction: Natural

Intake Manifold: Holley

Camshaft Type: Hydraulic Roller

Camshaft Lift (int./exh.): .595/.595-inch