>Not everyone is drag racing or is going to cut up a car for cooling. Especially original FE cars or Shelbys. The cars didn't overheat new. So there has to be a formula here to resolve the issue.
300HP = 150 lbs/hr = 22 gallon/hr x 114,000 BTU/gallon = 2,514,612 BTU/hr x .333 (about 1/3 lost into the cooling system) = result 837,366 BTU/Hr that the cooling system has to disperse. Even at 100 HP that' figures to 279,132 BTU/Hr. Over bores allow more heat from combustion into the water jackets, higher compression + more timing equal more heat, etc.
A 2000 sq/ft house in Houston, single story, average insulation, summer needs about 57,300 BTU/Hr cooling.