I read some threads about what the compression should be on a 302 ,but I don't have the original 30-30 cam. I have a ccxs282s. Anyway I did a compression test because I had a full throttle episode and then it ran a little rough. I freaked out but was relieved when I took off a valve cover and found I pulled two rocker studs and didn't damage anything. However, My compression was 210-230 on every cylinder and I thought that was a little high.