Summit Racing has created a series of comprehensive guides for each engine in the LS family, so engine builders and tuners can have a handy reference for their projects. The aftermarket is strong, crate engines are available, and used motors are often cheaply sourced through junkyards. These motors are capable of making a lot of horsepower, and respond well to upgrades like turbos, superchargers, high-flow cylinder heads, intake systems, cams, and nitrous oxide. Since LS and Vortec engines are so common, they’ve become the go-to performance and swap engines of the modern era. 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.
The information listed here is for a stock LY5 engine.
For marketing purposes, it was also known as the Vortec 5300. IV iron-block engine used in GM trucks and SUVs between 20.
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