Nick's Garage dyno's a 318 Stroker.

ir3333 said
Nice engine for sure. But shouldn't a 10.50 compression big block with ported heads, 2" intake valves, performer RPM intake, 750 double pumper and .525 lift cam make 400 hp.... or more?

Two words: exhaust manifolds. And we don't know much about the heads other than they're "ported".