The general rule i have seen, is two hp per cfm is possible. I think that kinda depends on how much motor is under the heads. I doubt a 273 under 225 cfm heads will run as well as a 408.
Forced induction throws that (very!) general rule way out the window.
Ok let’s throw in a150 shot of nitrous. The cam was ground by a guy who worked for crane and went on his his own. It was ground for a nitrous engine. I lost the card.
All I remember was intake 498/274 exh 512/286 lsa i113.5 hydraulic roller. I asked for extra on the exhaust as I’m running 340 manifolds