Racing and Engine Performance Calculators

A collection of performance calculators we use every day.
Click a calculator to expand it and enter your values.

Fuel System Capacity Calculator

Target Horsepower Fuel Type Engine Type Number of Injectors Injector Duty Cycle (%) Base Fuel Pressure (psi) Boost Pressure (psi)

Boost is used to estimate rail pressure and pump/injector pressure effects, not fuel demand.

Boost Referenced Regulator BSFC (lb/hp/hr)

Horsepower Calculator

Vehicle Weight (lbs) 1/8 Mile Speed (MPH)

Converter Slip Calculator

RPM at Finish Line Speed at Finish Line (MPH) Gear Ratio Tire Diameter (inches)

Optimal Rear Gear Calculator

RPM at Finish Line Speed at Finish Line (MPH) Tire Diameter (inches) Converter Slip (%)

Belt Size Calculator

Center to Center Distance (inches) Crank Pulley OD (inches) Pump Pulley OD (inches)

Performance Calculators