Dont quote me, but I do not think there is much difference @ all between a 500 2BBL carb & a 350 2BBL Holley.
I think Harry Turbo6 is/was using 500CFM carbs, could ask him for more info. He has been blowing throgh 2BBl carbs for a long time. Pay attension to what he has to say about them.
Maybe call the places that do mods for blow through carbs & get there input.
I am not sure what size 2BBL carb I have but, I believe it's a 350 CFM 2BBL if you want to buy it. I am not going to do anything w/it.
