Free Build Tool · Calculator One

ENGINE BUILD CALCULATOR

Bore, stroke, head cc & deck height → displacement and static compression ratio.

Engine Specs

Pick a factory engine code to auto-fill bore, stroke and target CR — or skip and enter your own values.

Engine code preset

Solve for

Engine Bore (mm)Engine Stroke (mm)Deck Height (mm)Combustion Chamber (cc)

Pick a variable to solve for, fill in the inputs, then press Calculate.

All metric (mm / cc). Static compression ratio — for dynamic CR factor in cam intake-close timing.