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Optimum Gear Ratio Calculator

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Desired shift RPM: 
First gear ratio: 
 
 

Four Speed Five Speed Six Speed w/OD
Optimum 2nd Gear Ratio:  Optimum 2nd Gear Ratio:  Optimum 2nd Gear Ratio: 
Optimum 3rd Gear Ratio:  Optimum 3rd Gear Ratio:  Optimum 3rd Gear Ratio: 
  Optimum 4th Gear Ratio:  Optimum 4th Gear Ratio: 
    Optimum Overdrive Ratio: 

The accuracy of this calculator and its applicability to your circumstances is not guaranteed.  You should obtain personal advice from qualified professionals.

This calculator was modified by the Corvette Action Center from Richmond High Performance.