We build a 427-inch LSX engine with an iron block and Chevrolet Racing high-compression COPO pistons to make 661 hp on Westech Performance’s Superflow dyno.

It's hard to believe that General Motor's LS series of engines have been with us for 20 years. Introduced in 1997, performance enthusiasts quickly learned all this new design had to offer—these ...

Custom V-8 LS-Swapped Scion FR-S Pair Built for Sideways Shenanigans Much more than just a trend, GM’s LS V-8 takes this FR-S drift duo to a whole new level.

There are plenty of high-powered, performance-oriented LS engines out there. But what about the LS4? How powerful is that particular iteration?