Cylinder Head Porting and Power Production

Arbitrary or not all I was trying to say was when I see 2.06hp/cfm from my flowbench to my dyno the engine seems to over achieve in real world use. The corollary is also true from what I have seen. Also any 351C I have done for the street turned out less than great. J.Rob
I believe they REDUCE the port volume on the Cleveland heads for street use.