Get your engine's optimal compression ratio and total displacement in no time flat! Just complete your engine setup, click calculate, and you’re on your way to maximum performance.

Instructions: Enter a value in the un-shaded boxes below as they pertain to your engine. Note: For pistons BELOW the block @ TDC – value in box must be a NEGATIVE number (-0.000)

This calculator is designed to show the different Compression Ratios for different sized engines.

You won’t second-guess your ratios with this handy transmission gear ratio calculator! The hassle-free way to start your stroker engine build! Get accurate compression without the guesswork! Ring-and …

This compression ratio calculator can be used to work out the compression ratio of your engine.

Calculate the compression ratio of an engine using our calculator. Plus, learn the formulas to find the compression ratio.

2 days ago · Input a positive number for valve reliefs/dish and/or piston below deck. Input a negative number if it has a dome and/or piston above deck.

Nov 2, 2010 · You won’t second-guess your ratios with this handy transmission gear ratio calculator! The hassle-free way to start your stroker engine build! Get accurate compression without the guesswork! …

Nov 2, 2010 · Get accurate compression without the guesswork! Car shows, cruise-ins, and more! See what's going on at the retail location nearest you.

This calculator will compute static compression ratio, commonly just called compression ratio. An engine's compressio ratio is the ratio of its cylinder volume at top of piston travel (Top Dead Center) …