I'm not sure why anyone would want standard port heads on anything larger than a 383 unless they were building a low rpm street car. McFarland's eqn doesn't hold up to reality.
Thats exactly what I built. It runs reasonably well for a double duty car, but it is a compromise.
'63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
