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

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.

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.

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.

The GM LS1 and LSX come from the same family of engines, but what's the real difference between the two? Quite a lot, as it just so happens.