After installing my heads and cam I had no power increase over stock. I was asking around about what pushrod length to use, and was told the stock length would work as long as I was within 1 to 1.5 turns from 0 lash. Well that is wrong, they are supposed to by 22 ft lb. I guess the guy thought I had adjustable rockers. The rockers are basically tightened all the way down and maybe holding the valves open. Will this cause a valve to burn? What can of damage would be possible if any?