richardparker

iTrader: (7)

I'm looking for some info on combuston chamber size. In (cc's)
3.2 premium
3.2 type s

Also 3.5
or 3.0
^ if either of those fit also.
Looking to get the most compression out of the heads ONLY.
With out touching the lower end,yet.
Trying to get all the knowledge I can before moving on.
Any comments appreciated.

CH46ESeaKnight

Sorry I don't know the specs.

however I don't know if you know or not, but you could always have your heads shaved. Any good machine shop should be able to cc the combustion chamber and factor the factory comp ratio and figure out how much to shave off the head to get the comp you are looking for, provided you have valve clearance, wich I'd bet ( but dont quote me) the clp should have plenty.

I did this with my Tahoe SBC 350. Took the compression to 10.3 to 1 from I think it was 9.1 to 1 stock. With the custom tune and cam and a few other mods it worked out very well. The only down side is I had to use super unleded fuel. In 2006 I was in Las vegas where it was 115 degrees and I was towing a big ass boat, it started pinging. I had to go to Rebel fuel station and top off (about 8 gallons) with 100 octane before the ping went away. That was the only time I had a problem. The truck was mainly used in Colorado so there was never a issue there.

So I'm just saying be careful with the increase.

richardparker

iTrader: (7)

I know shaving the head will bump compression and heard it will also retard timming at the same time.
I could use the timing retarded but I would not know how to figure it.
Anyone else know about the heads ?