While keeping the base cast-iron block that featured in the LS6, the LS7 was given the solid lifters from the ZL1, while its compression ratio was raised to 12.25:1. It was also graced with forged ...

The LS7 remained in the Chevrolet engine lineup ... heads contain two valves per cylinder operated via hydraulic roller lifters and pushrods. The cylinder heads' combustion chamber, combined ...