408 on dyno, what will it make?

Dinky cam, even for that compression, but it should make somewhere between 475-500, depending on exhaust.
My old 318 enginemasters motor made 477 with dyno headers, identical flow number on heads, and an airgap knockoff. Cam was 248@ 50 with 10.44 compression. Lot of little tricks in the motor though, obviously, to make that at 323 cubes.
This 408 should make a little more than that i would think, maybe not.