Check with Brian Halfinger (IMM Racing engines) , I'd like to hear his opinion

I have a set of the Airwolfs that are I believe were CNC ported Pro Comps, they flow really well but they only made a few sets of them on my 414. They flow around 310 @ .600 the only downside to them is the roof to spring pocket thickness is very thin but I don't run a very high spring pressure so they work fine in my motor/combination.

I believe the Pro-comps were actually cast thicker in this area then the Edelbrocks, so I think that's probably where much of the additional flow potential comes from. If I was running a .750 lift solid with a lot of spring pressure I'd be a bit nervous but i think if I wanted to run that big a Cam I'd be looking at a W9 (or something similar) anyway.