This page contains information about GM's 5.7-liter V8 LS1 Small Block engine, including specifications, horsepower, torque, vehicle applications and more.

Small-Block Chevy vs. LS1 Engine Test: Complete Destruction! We put both engines on the dyno to see which made more horsepower and torque. It didn’t go as planned.

This is where the 41-year-old Mouse motor and the new LS1 split genes. The new small-block shares nothing more than the same 4.40-inch bore spacing when it comes to the engine's design.

The range of production engines from the LS platform is wide. On the truck side, iron-block engines have included 4.8L and 5.3L versions, as well as all-aluminum 6.0L and 6.2L premium engines.

The GM LS1 and LS2 are the successors of Chevy's small block V8 engine. While they share a lot in common, there are some small but significant differences.

We Build A 440-Inch LS Engine That Puts Out Over 650 HP On 91 Octane. HOT ROD Staff Writer Nov 01, 2010 Unless you've been living under a rock, we're sure you've heard about GM's LS series of engines.