318 build up
I am building a 318 for bracket racing and using the "302" casting 85-92 heads ported and the KB-845 piston which has a .140 dome. Should be good for 11.5 compression. To run 12's with a 318 you need compression and some gears for sure. Bobby at BJR has some excellent 318 ideas which I am putting into practice. I am shooting for 13's at my mile high altitude.