Daily drivable 720hp is effortless with this 427” LS7. Starting up top with the cylinder heads, we install CHE precision manganese bronze valve guides before running our in-house CNC porting and assemble with your choice of quality components. Bottom end begins with your choice of trued and indexed 4.000” crankshaft with Callies Compstar or Ultra connecting rods. Custom forged Wiseco pistons fill the 4.125” cylinders that have been honed to perfection. No matter what you plan to power, this LS7 will provide miles of dependable service.