???What do you ???mean?? you have the valves??? torqued down t0 25???
You have a shop manual? You know how to adjust valves?
Download a 72 shop manual free from here:
http://www.forabodiesonly.com/mopar/...al%2C+download
They show rocker shaft bolts at 25 ft - lbs THIS MAY NOT BE CORRECT, do you have 5/16 or 3/8" bolts?? (There are mistakes in some manuals) If your rocker shaft bolts are 5/16 bolts (1/2" heads) tighten them to 200 inch - lbs or (divide by 12) about 15--17 ft-lbs
Did you ADJUST the valves? The 72 book shows them at .010" intake, .020 exhaust HOT