Serious builders and performance enthusiasts—meet the powerhouse that redefines street and strip performance: the ATK HP Crate Engines GM LS 408ci. Designed for high-horsepower applications, this LS-based stroker delivers the perfect combination of modern reliability and raw American muscle.

This 600 hp crate engine is built from a seasoned GM LS platform and stroked to 408 cubic inches using premium internals like forged pistons, a steel crank, and high-flow aluminum heads. It cranks out an impressive 600+ horsepower and torque to match—ideal for Pro Touring cars, drag racers, and high-performance street builds that need serious power on tap.

Each engine is precision-assembled and dyno-tested to ensure optimal performance right out of the crate. Whether you're dropping it into a late-model swap project or replacing a tired engine in a muscle car, this 600 hp LS engine for sale is ready to transform your ride with modern power and reliability.

Thanks to its LS-based architecture, this 600 hp LS crate engine offers broad compatibility and tunability. From throttle response to sustained top-end power, this engine is engineered to deliver in real-world conditions and under racing stress.

Backed by ATK's reputation for quality and supported with a limited warranty, the GM LS 408ci crate engine is built to last—and built to win. When only high-horsepower LS performance will do, trust ATK to deliver the muscle your build deserves.