Chevrolet LS1 Engine Specs

The Chevrolet LS1 was the first production engine in the LS family and the V8 that launched the modern Gen III small-block era in 1997. Introduced in the C5 Corvette, it replaced the LT1 and immediately showed how much performance Chevrolet could extract from a compact pushrod V8 with modern electronics and improved cylinder head design. The LS1 quickly became one of the most influential American performance engines of its era.

Chevrolet developed the LS1 to create a lighter, cleaner, and more efficient successor to earlier small-block V8s without giving up the strong torque and compact dimensions that made the formula so successful. The result was a 5.7-liter aluminum-block V8 with sequential fuel injection, coil-near-plug ignition, an OHV 16-valve layout, and a timing chain drive. Depending on application and year, output generally ranged from 305 to 350 HP with around 470 to 475 Nm of torque.

In factory form, the LS1 offered a broad torque curve, strong tuning potential, and very good durability for a performance V8. It became famous not only in the Corvette, Camaro, and Firebird, but also in Holden and Pontiac applications. Even today, the LS1 remains one of the most popular entry points into the LS platform thanks to its parts availability, light weight, and huge enthusiast support.