old school 340 cam help

read through AJs post a couple of times
which 318 head
308's would make a big difference over the early stuff
(so would magnums if you got lucky)
I can't see running a comp 268 chevy cam under any circumstances but it in there
but with 12:1- yikes
Do you want to make the heads u have work?
do you have head flows or go to the Stan Weiss site and pick some
did you say what pistons and dome height and how far the valley side is above/ below deck?
"308" heads are not 318 heads, they are 360