Engine & Performance

Calculate engine displacement in cubic centimeters (cc) or cubic inches (ci) from bore and stroke measurements.

Calculate static compression ratio from cylinder volume, chamber volume, and piston specifications.

Calculate horsepower from torque and RPM, or estimate horsepower from quarter mile times.

Calculate torque from horsepower and RPM.

Estimate quarter mile ET and trap speed from vehicle weight and horsepower.

Convert between Air/Fuel Ratio (AFR) and Lambda values for different fuel types.

Calculate required fuel injector size based on horsepower and fuel system specifications.

Calculate estimated boost pressure needed to reach target horsepower.

Calculate camshaft duration at different lift points and understand cam timing.

Calculate engine volumetric efficiency from airflow and engine specifications.

Calculate required bore diameter to achieve target displacement.

Calculate required stroke length to achieve target displacement.

Calculate mean piston speed at a given RPM.

Calculate connecting rod ratio and its effects on engine characteristics.

Calculate optimal throttle body size for your engine.

Calculate optimal exhaust header primary tube diameter.

Calculate proper piston ring end gap for your engine application.

Calculate proper main and rod bearing clearances.

Convert between wheel horsepower and crank horsepower accounting for drivetrain losses.

Calculate required airflow in CFM for target horsepower.

Calculate optimal intake runner length for peak torque RPM.

Calculate optimal intake plenum volume.

Calculate intercooler efficiency and outlet temperature.

Calculate wastegate spring pressure for desired boost.

Calculate boost levels from supercharger pulley sizes.

Calculate valve lift from cam lobe lift and rocker ratio.

Calculate valve spring seat and open pressure.

Calculate effective rocker arm ratio.

Calculate optimal pushrod length for your valvetrain.

Calculate optimal exhaust collector size.