LS1 upgrade guide

[Editor’s Note: This LS1 engine upgrade guide is the first in a series of LS engine upgrade guides assembled by a team of LS experts at Summit Racing. The LS1 engine is a Gen III 5.7L aluminum-block V8 car engine that first appeared in the 1997 Chevrolet Corvette. The LS6—introduced for the 2001 Chevy Corvette Z06—is