LS4

[Editor’s Note: No offense to the LS4 intended, but the most notable thing about it is that it’s usually the worst-possible choice for an LS engine swap project because it’s designed specifically for front-wheel drive (lovingly called “wrong-wheel drive” by some) cars, so if that’s why you’re here, save yourself the time and hassle and choose

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