Quote: The 300hp version can't be considered a "smogger" for the same reasons. The only difference between the two was the intake manifold, .010" of cam lift and intake valve size.
Myron,
I would be surprised if the old 300 crate motor was anything other than a stock low compression 360 long block with better valve springs and cam. I looked at some old MP catalogs and they specify the crate 360 as having 9:1 compression, the crate 300 they are strangely silent on compression. I bet all the 300 crates had production 8:1 cast pistons.
