Late 80's swirl port heads 302/714's

I've either heard PRH story before or similar
I've found the open chambers make more power on a race motor, unshoruded valves and all that. Good to see back to back test with same valves and valve job procedure
I still like closed chamber on the street, truck, motorhome
they seem to take less timing and are less picky on the fuel
perhaps it's that the 360 heads are being run above the torque (BMEP) peak
I can't guarantee good gas