I have seen a number of 450hp 390s at 9.5:1, if i took the same motor and raised compression to say 11.5:1 what kind of gains are poss. theoreticly of course. with higher compression would the numbers I want be easier to acheive. If we biuld a strocker I would like to go with a genesis block and Barry's stage x blue thinder heads(dreamin) unless I can come up wit a money tree
