[Editor’s Note: This LS6 engine upgrade guide is part of a series of LS engine upgrade guides assembled by a team of LS experts at Summit Racing that we are sharing at OnAllCylinders. The LS6 is a Gen III, 5.7L aluminum-block V8 that first appeared in the 2001 Chevrolet Corvette Z06. It is dimensionally identical to
Mechanically similar, General Motors’ LS and LS-based Vortec engines wound up on almost every branch of the GM family tree: Chevy, Pontiac, GMC, Cadillac, Buick—heck, even Saab, Hummer, and Isuzu got some LS love. Since LS and Vortec engines are so common, they’ve become the go-to performance and swap engines of the modern era. These motors are
In 1965, Chevrolet began offering the big block Chevy Mark IV—better known as the Rat. This wasn’t Chevy’s initial go-around with big block engines as its Gen. I W-series big blocks were first offered in 1958. However, the Mark IV engines (originally called Gen. II) improved upon the design of the original W-series engines and helped
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