"The Helix 2 is the best choice for just about all high performance applications. Single turbocharger and twin turbocharger engines will both benefit. Large reductions in maximum exhaust gas temperatures and smoke are immediately noticed. Increased throttle response and pulling power. Lift is higher and duration is extended on both the intake and exhaust lobes. This cam is ground from a new blank casting and is not a regrind. The H2 has the lobe ground for a mechanical fuel pump. Both the press on and press-on/bolted-on camshafts are available in the H2 grind. Bolted-on drive gears raise the durability of the system and allow for added piece of mind with high powered engine combinations. Cam failuers and gear walk have been indicated in even stock Cummins engines using the P7100 pumps that used the press-on gear system. Bolt-on gears fix this potential trouble in high performance applications.

RPM range of the Helix 2 is from idle to 4000 RPM"

Thats from F1s website, not my words