I dont have any experience with the Vortech but I bought a used Powerdyne a year ago and its been great. I upgraded it with the 11 lbs. pulley and the ASP 7" crank pulley. I dropped two seconds off a 91 auto vert. Its quiet and easy to install. A real sleeper on the street.Its designed for low end torque which is great for jumps at the light but I believe the other superchargers will make more for racing.
|