Reference: Compression Ratio Calculator

[nd4sped]

To answer that daily million dollar question. This site has been posted many upon many of times. Its time it was stickied.

http://www.c-speedracing.com/howto/compcalc/compcalc.php

Here is an example. Its User Freindly.

 

[Ace$nyper]

Thanks thats a nice toy to play with!

 

[io_303]

I have bee using that for a while, there is a d series one too