When you talk of a NOS cam,is it something along these lines?
7.27-6.90 lift, 2.84-2.95 duration at 50, 112 lobe center I believe this cam would be too much for my heads. I would rather stay under 600 lift. I really would like to keep it iron headed if possible as aluminum heads were not used much in the 60's. Besides I have to spend enough money getting this car back together after decades of sitting outside turning into a pile of rust.