At Southern Performance Systems, we offer the LS1 in both a Stock Engine Turnkey Package and our own SPSeries Package.

The engines internals for each package are identical with 346ci, a 3.90in x 3.62in Bore and Stroke, Camshaft lift (duration) of .500 (198°) intake / .500 (209°) exhaust, and 10.25:1 Compression Ratio. The valve sizes are 2in intake and 1.55in exhaust.

The Turnkey LS1 Package has been designed for customers with who are looking for a basic engine package at an affordable price.

The SPSeries LS1 was designed for the Hot Rod Enthusiast thats looking for an engine that will stand out with the hood is up.