I know already that the top end sounds like crap for one reason or another but the truck is performing better that I could have asked for after putting in the new rings. My compression was all over the place. We had a little discission here about max. r.p.s. a while back and I had a hard time getting 4400 out of the beast...now is not a problem. I actually go there quite often these days. Would worn out valves give me a funky noise do you think? I didn't do a valve job simply because I didn't think of it <img src="/forums/images/graemlins/sleeping.gif" alt="" />