[blykins]

Low lift is a lot of it, and yes, you want a well flowing head with the smallest port possible. Everytime I say that, I think of the CHI Cleveland heads. They are a mix of old Cleveland 4V head flow, with old Cleveland 2V head port velocity. Best of both worlds.

That's also why the AFR and TFS heads work very well. The 185-205cc heads flow better than most 210-225 heads flow. Good velocity.

I'm not knocking Blair's services by any means. I have talked to Blair quite a bit over the phone and emails and have even got his advice on some things. However, I would weigh the "cost-effectiveness" of a head that requires that much labor in comparison to an out of the box head, or a readily available CNC head.

Of course all of this pivots around the camshaft selection too. A cam with .750" lift doesn't lean fully on a head that moves big air at .200" lift. The valve job has a lot to do with performance at the low lifts and when you back cut the intake valves you start to see that in action.