318,340 or 360?

I think your Dad posted here. HE he he. Sounds like I read this post before. Seriously.

OK, do a 360. Depending on whats in your wallet to spend, theres a huge difference between 300 & 400 HP.
300 HP can be done with stock parts and headers w/a 340 cam.
400 HP is more likely to be pocket/bowl ported heads or OOTB Edelbrocks and a 280* (advertised) cam and headers.

A 650 carb has enuff CFM.