Boy that was a quick response. Thanks. You don't think that would get too noisy? I doubt it would. Good point you have though about less lift. I will do that tonight. My 4x4 has some major valve seal problems that I am putting off till next weekend and I have to fix the chevy tonight so I can go hunting tomorrow. You know how embarrasing it is getting passed by little rice burners on an onramp with a motor like that? I pass them once it winds up no problem but it's still embarrasing. I got this chevy to pull my horse trailer but that ain't gonna happen till I finish my motor. It's a 350 4 bolt from an 82 .030 over and I am doing the three angle job with manly valves and have decided on a comp cams extreme 4x4 cam 264 I think was the duration. My pistons are probably gonna be flat tops but not sure yet. My frinds is trying to talk me into 305 heads for a tad more compression but is that really true? more compression? I have a set of them in the garage read to go. I already plan on having to use mid grade gas. I can't afford another super unleaded motor around here. Any Ideas for valve train for a hipo truck engine? roller vs stock and spring type.