318 heads cant firgure out the cc on the head

You should invest in the economy head CC kit. It's pretty cheap and will give you a good feel of how to measure CCs. Not trying to be a smartass......it would give you a chance to actually learn something by doing it yourself. What's that thing about you can slap a man upside the head with a fish...but you can teach him to catch his own fish and slap hisself upside his own head......er sumffin like that. lol