in my opinion 277 and 285 @ .050 camshaft will need some compression.
Yep Todd74 hit the nail on the head. If this is a lower static compression engine that cam profile that you listed, in my opinion is too big. I realize that the cubic inch is there but for the 320 head and lower C.R. somewhere around a
[email protected]" duration would probably be ideal. Too much bump and not enough squeeze.