friends 318 build

.020 will add about .3 points. The problem is, you have a shortblock that with the smaller chamber (still open design) only got to about 8.2:1. Drop that to about 7.8:1 by adding larger 360 chamber heads, mill .020 and you're all the way up to 8:1, with a fairly large cam (for a 318) and the large plenum (way too big for the 318). I would estimate it not making even the 99mph figure. I'll go with 14.80s at 94 or so.