Gear & Transmission Calculators

Calculators to help you out


Enter your 1/4 mile race car's information into our calculator to see how well you will perform. Then, change Richmond's performance gear ratios and beat your best time!

Access Drag Performance Calculator


This calculator will help your hot rod or street machine get to the next level without red-lining your engine. The Street Performance calculator is also handy when changing tire sizes on street rods.

Access Street Performance Calculator


Considering changing the size of your tires? Use this gear ratio calculator to see what ring & pinion gear ratio will be right for you after a tire size change.

Access Optimum Transmission Gear Ratios Calculator