Race Cast Engineering builds these V-12 heads in-house. As the name suggests, the V-12 LS is a 12-cylinder engine that shares its basic design with Chevy’s iconic small-block.

Around 2002, some of the LS1 engines started receiving the improved LS6 parts such as the intake manifold, heads, and stronger block. The 2004 GTO also fielded the LS1 (350 hp).

In its history, General Motors has put some powerful LS engines under the hood of its most popular models. Here are the top ones and their specs.

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 World Products Motown LS crate engine is a 427ci small-block Chevy crate motor that breaks new ground as it is fitted with Chevy LS engine cylinder heads - Super Chevy Magazine ...

Among the most notable of the small-block V-8 family is the LS7. Purpose-built for high performance, the LS7 boasts the biggest displacement numbers in the entire LS family.

LS-series mills came in a dizzying array of shapes and sizes, all with different displacements, power outputs, piston sizes, but—and this is the best part—all based on the same engine block.

History of the LS Engine and Cylinder Head Casting Number Spotter’s Guide: LS1, LS6, LS2, LS3, LS4, L99, LS7, LSA, LS9, LQ9, LQ4, L92, L94 LS Everything: An in-depth look at the LS engine series ...