I cant figure out what the casting # is on a set of heads I got. It looks like a big line of numbers with no definition on the at all. So, anyone have any secrets on trying to find out what heads they are? They are bolted on still so id like to keep them on if I can.
Also, they have press on studs. Could that be an indication of their size? I had a 305 that was like that so Im hoping thay also made some for 350's like that.
BTW the # on the block is 3956618, but ive found the specs on that one already. thanks for any help.

 

The head casting # is on the right side underneath the valve cover,above the springs. Should be about 7-8 #'s long.

Then run them on www.mortec.com