STAGE ONE: Step-By-Step...
Gain 11HP With The Easy-To-Install GEN III Stage I Performance Package!
Stage 1 of the COMP Performance Group™ GEN III Performance Package centers around addressing a couple of key performance-reducing features of factory configured LS–based engines. Specifically, weak factory pushrods that have a bad habit of flexing under a load –sacrificing valve lift and lifter speed, and an OEM computer tune that attempts to blend economy with performance with mediocre success at best.
STAGE TWO: Step-By-Step...
Gain 18HP With The COMP Cams™ GEN III Stage II Performance Package!
Stage II of the COMP Performance Group™ GEN III Performance Package brings the horsepower gain up to 18 over factory LS1 specs*. Stage II includes the revolutionary COMP Cams® Beehive™ valve springs, Pro Magnum™ rocker arms, Hi-Tech™ screw-in rocker studs, and guide plates. It is important to note that though the first two stages result in a healthy (and noticeable) horsepower gain, they also equip your valve train  to safely and reliably support the much larger horsepower gains to be had by adding the final 3 Performance Package stages and beyond.
STAGE THREE: Step-By-Step...
Gain 56HP With The COMP Cams® GEN III Stage III Performance Package!
Stage III of the COMP Performance Group™ GEN III Performance Package brings the horsepower gain up to 56 over factory LS1 specs*. Stage III consists of a swap to one of COMP Cams® cutting-edge XFI™ Hydraulic Roller Camshafts. XFI™ cams deliver some of the most aggressive, horsepower-producing hydraulic roller lobes ever designed. They also represent the perfect complement to the high performance valve train foundation that you have built up with the first two Performance Package stages. Swapping to one of these camshafts is simple with the easy-to-use Cam Tuner Technology™ that comes standard with the FAST-FLASH™ Power Programmer. Stage III cams are offered in 3 different profiles. Choose one based on how you intend to use your vehicle.

STAGE FOUR: Step-By-Step...
Gain 64HP With The COMP Cams® GEN III Stage IV Performance Package!
Stage IV of the COMP Performance Group™ GEN III Performance Package brings the horsepower gain up to 64HP over factory LS1 specs*. Stage IV consists of a swap to one of the FAST™ LSX™ Intake Manifolds. LSX™ intakes deliver vast improvements in airflow and efficiency over even the highest-performance factory intakes, and they do it without sacrificing off-idle torque or throttle response. The LSX™ 78mm is the hot ticket for powerful bottom-end torque, and the super-efficient LSX™ 90mm kicks out serious high-rpm horsepower for max-effort street/strip action. Choose one based on how you intend to use your vehicle.

STAGE FIVE: Step-By-Step...
GAIN 108HP WITH THE COMP CAMS® GEN III LS1, LS2, LS6 STAGE V PERFORMANCE PACKAGE!
Stage Five of the COMP Performance Group™ GEN III Performance Package brings the horsepower gain up to 108HP over factory LS1 specs. Stage V consists of a swap to a set of RHS™ Pro Elite™ cylinder heads. Pro Elite™ heads deliver huge horsepower gains, increased efficiency, and improved strength and stability over OE cylinder heads. Pro Elite™ 210cc heads are the ultimate street performance head with their high velocity 210cc intake runners, and the super-efficient Pro Elite™ 225cc head delivers the goods under high-rpm, max-effort street/strip conditions. Choose the Pro Elite™ Cylinder Head that’s right for you based on how you intend to use your vehicle.