Carb Size

cause it's very mild and unless the heads have port volume and or a giant cam and even then it won't buzz but the high side of 5800rpm, if that, and If they put a 600 hundred on there it wasn't cause they were looking for ultimate power, more like vacuum [smaller venturi] and gas milage.

Hey you could put a 500 2 barrel on a 360 or even a 383 for that matter, hey how bout a 440.. jmo