Milling Heads for a desired
Compression Ratio 
Enter the required information into the boxes and click results!
Tip!
This Calculator is designed to tell you how much you need to mill your heads to achieve the
specific Compression
Ratio you are looking for.
If
you Do not know your current
Compression Ratio, go to the Compression Ratio Calculator to figure it. You will
need the actual compression of your setup now to complete this calculation.

Current Compression Ratio: 

Desired Compression Ratio: 

Stroke of Crankshaft: 



Input your Compression Ratio and Desired Compression Ratio please 