At Southern Performance Systems, we offer the LS3 in a Stock Engine Turnkey Package or 1 of 3 SPSeries Packages.

The engines internals for each package are identical with 376ci, a 4.06in x 3.62in Bore and Stroke, Camshaft lift (duration) of .551 (204°) intake / .522 (211°) exhaust, and 10.7:1 Compression Ratio. The valve sizes are 2.165in intake and 1.59in exhaust.

The Turnkey LS3 Package has been designed for customers with who are looking for a 430HP Engine Package for a reasonable price.

The SPSeries LS3 was designed for the Hot Rod Enthusiast thats looking for an engine that will stand out with the hood is up. The SPSeries LS3 is offer with 3 Horse Power ratings, 430HP/480HP/540HP.

The SPSeries Supercharged LS3 is meant for the "Horse Power Nuts" that crave Lots of Power and Speed. This engine regularly dynos at 640 Horse Power.

Our SPSeries Custom LS3 is for the individual that is looking for something truly unique in both power and style. Every detail possible can be customized from the color of the engine block to the cam profile and even down to weather or not to use Stainless 12-point Bolts or Black Anodized Hex-Head Bolts. Don't forget about a Nice Chrome Supercharger to top you Custom LS3 off with. Let Us Build your Dream Motor.