So, digging through GM's crate engine specs is interesting. I just figured out that the old Fastburn 385 they used to sell uses the same cam as the 604 crate that I already have and a dual plane intake manifold but on a 350 ci shortblock with 9.6:1. It was rated at 385hp,385ft lb. Here is the dyno chart of it.
Basically I would have that exact same top end, but on a 383 cu in short block with the same 9.6:1 compression if I used that 604 crate cam and my intake. So I know it would work, I just wonder how much more hp and tq it would make with the extra cubes?