Cylinder Head Porting and Power Production

I know that a head flowing 240 cfm @ .400" is probably going to work very very well for most purposes. I also know that a head flowing 230 cfm @ .400" is also going to work very very well also. What I'm trying to say is the flow rate really doesn't tell even half the story as far as I can tell. This is why the jury is still out on certain heads until they gain a reputation for just "working" . I have the EQ Magnum and Chevy Vortec in mind here--these heads --never mind the dyno results--just flat out work. So defining what "works" means is problematic as well. This is one reason why these types of discussions get convoluted so quickly and easily. J.Rob