Hey Ironman! Glad you picked up something. I’ve read this from 3 or 4 sources. If your J heads are at least bowl ported with the 2.02 valves, all that remains is at what percentage and what kind of valve job they did. I can’t really help here. I’ve seen head porters argue (kind of, at least constructively.) over the percentage to be ported. So I’ll opt out of that one. On the valve job, the best I got is more angles the better, but this may not be the case on every head/valve combo.
Stand by for a head porter!
@PHR - Mr. Porter should be able to help a lot here.
@Rat Bastid who is chock full of info can probably shed some light on the in’s and outs of various cylinder heads as well.
@pittsburghracer He can tell you what he does for what he works on.
Hey Fishmen! What is the C/D abbreviation?