8-71 Std Helix Supercharger

The PSI 8-71 Standard Helix is a positive-displacement pump supercharger. It is belt driven, and has instant throttle response. It has an Aluminum housing and billet aluminum rotors. Strict geometric tolerances allow for parts interchangeability between blowers with ease.

Designed for the special requirements of competition, it has significant advantages over all other blowers:
Instantaneous throttle response: The rotors have less leakage than any other supercharger resulting in full boost sooner Cooler manifold air extends crank and piston life and reduces detonation

Rotors flex less reducing tip strip wear and leakage

Higher efficiency means more engine power at all engine speeds

Lower cost of ownership: The PSI's durability and reliability results in benificial effect on engine parts

Superior air delivery: Power to spare without high-revving your engine

Timing. PSI rotors don't go out of time

R & D: Drag racing is a game of pushing the limits, so we are constantly redesigning our products