Most of General Motors' modern small block V8 engines fall under the LS ... same engine family as the above-mentioned 4200 Vortec six-cylinder, the Atlas was a 3.5-liter inline five-cylinder ...

General Motors has a long history of making innovative strides in engine development. The Chevrolet small-block V-8, for example, began life in the 1950s and soon became the standard for high ...