I had Lloyd Elliot do some porting on my heads, he said he had to take .010 off of them. Does anybody know how many cc's my combustion chambers are now? Or would taking that small amount off not really affect it that much? Thanks in advance.

 

.010 is adding maybe 0.15 to your total compression. Nothing to bother over

 

Taking .010 off your heads due to surfacing will only reduce your combustion chamber size by about 3cc if I'm not mistaken.