if you are planning an overbore or may want to build a stroker motor, here is a quick calculator to determine displacement. much easier than doing all the math. after all......pi is for eating
https://www.google.ca/url?sa=t&rct=...tlKMR7Eedqhi-butg&sig2=heIgBNxO3LoNvqOzbz6fXQ
https://www.google.ca/url?sa=t&rct=...tlKMR7Eedqhi-butg&sig2=heIgBNxO3LoNvqOzbz6fXQ