Summit Cam Recommendation

From what I have seen, Summit cams have fairly slow clearance ramps. Meaning they perhaps need a bit more compression than another brands same size cam. And that loss of compression will cost you money at the pumps every time you fill up.
I have a 1973 low-compression engine, and there is no way I would put much of a cam in it........ but it doesn't have 302 heads on it.lol.
Perhaps it would be prudent to work backwards from a measured compression ratio, and a known TC stall, and known rear gears