David Vizard, Uncle Tony's garage, Unity motorsport. Mission impossible Dodge 302 Head porting

As far as how did he recover???? he quit porting in a area when it lost flow, so there is vary small different made between that port and the next.
The other thing is that you will NEVER get the Exact same flow number on each port. No matter how hard you try. Maybe if you had a billet block that you machined into a head you might be able to get the same flow numbers on a bench. But even then i bet there is veriables between ports.