Race Calculators

1/4 Mile ET / MPH Calculator

Use your power and weight to calculate your ET and MPH

 

 

 

 

 

 Supercharger RPM Calculator

Use this to calculate the RPM at which your supercharger headunit is spinning.

Headunit          -  Step Up Ratio - Max Supercharger RPM

Paxton 2200SL -   3.6:1              - 53,000rpm
Paxton 2200    -   3.6:1              - 60,000rpm
Vortech V2       -   3.6:1              - 53.000rpm
Vortech V3 SCI -   3.6:1              - 52,000rpm
Vortech V3 SCI -   3.6:1              - 52,000rpm
Vortech V7 YSI -   3.4:1              - 65,000rpm
Vortech V7 YSI -   3.4:1              - 60,000rpm
Procharger P1SC- 4.1:1              - 62,000rpm
Procharger D1   - 4.44:1             - 65,000rpm
Procharger F1   -  5.4:1              - 70,000rpm
Procharger F1A -  5.4:1               -74,000rpm
Procharger F1C -  5.4:1              - 74,000rpm
Procharger F1R -  5.4:1               -68,000rpm
Procharger F1X -  5.4:1              - 72,000rpm

Factory Coyote Balancer Diameter 6.78"
ATI Coyote 20% Balancer 7.88"