... OK so air speed is really more important then cfm, to me. You get to much, you get turbulence(I'm not taking swirl) you get to little and you get fuel drop out. So, yes you can easily easily port a 360 head and get more flow with less turbulence...
Nothing about cylinder port flow is laminar. It is all turbulent. Small port big port it's all turbulent, flow when the engine is running, especially running hard.