six pack carbs

i too have a set from a 440, and they operate flawlessly, with no bog, or hesitation. There are many good reads about how to set up, and tune them. The only thing that i have found online different between the small and big block, is a smaller internal vacuum port on the outer carbs, to slow their opening, but the article shows how to drill, tap, install an allen plug , then drilled out to the correct size, but after rebuilding mine, I dont see a need for it.