While the engine in my A65 is a 1968, the chassis in a 1971 Oil-in-Frame, and does not meet the spirit of the Classic Sixties class. The argument could be made, but the reality is when I come out of Prod Heavyweight, I will likely run it in BEARS. That seems to be a better fit for that machine.
As far as references, I have access to the internet. Which means is access to the whole of human information and recorded history. but that is beside the point. I do have some older racing workshop books, that as more general information. I do have digital copies of the factory manuals
, which are all part numbers. I work as a CAD designer, meaning that while part numbers are interesting, actual dimensions make more sense to me. So adding material onto a cam might be completely impractical. More likely, because I have a pattern to model off of, doing a set of custom cams on a CNC might be a way to go. Regardless, the exercise is theoretical at this point, so the question still stands, what would be a perfect cam profile for a fairly stock ZB33?
The head casting you asked for is 65-1383. Intake port measures 1.18325" (al little more than 1 11/64") and exhaust port is 1.6245" (1 5/8")