Looking to boost the power of my 318

rumblefish360 said
Oh yea, you have a low ratio issue. Knowing the cc amount of the heads (Both heads) would be of great help before we continue.

thats what he said, but if your heads have not been surfaced a bunch you could reasonably expect them to be around 72-73 cc's. Only way to know for sure is to measure but those numbers tend to be fairly close for guestimating purposes.