Need help with Insane 340 setup.

Ok a little update for ya....

I pulled the other head and theres another pistons on the other side with the same damage and then another that the edges of the eyebrows look a little melted and pushed inward. So I'm definately looking at some new pistons. I found a set of used TRWs just like mine so I was thining about going that rought and milling them down a little extra to get compression decent.

But.... I cleaned up one head chamber to find that it was fully smoothed and polished, took out 2 valves to find they are indeed stainless made by Manley, but they are longer then stock and the kicker is I neasured the intake valve at 2.058 !!!!! Compared to the 2.02s in the other set of J heads I have that measure 2.023. So it has either 2.05 or 2.06 valves, but I've never seen such big valves in SB mopar before. Also it looks like the entire head was ported and polished and the bowl area under the intake valve looks very nice, definatley not a home job, looks profesional. I'm quessing that these are going to flow some good #'s.

Anyway I cc'ed the #3 chamber to find that they are 62cc chambers, pretty small for a J head, I know my other set is 69ccs with stainless intake and standard exhaust valves.


So I dont know if I can cut enough off the high dome TRW's to get a decent compression with 62 cc heads. I'd like to get 10-10.5 compression and run a decent size cam to be pump gas freindly.

Any thoughts, heres a few more pix...

Butch