All Six CFM - does 2V or 1V matter?

[customline]

I have a question - if an engine of a given size has a requirement of, say 250cfm …… does it matter if it gets it from a carburetor rated to flow at 250cfm whether it is 1, 2, or 4 barrels? I have seen things implying that a two barrel specifically is preferred over a one barrel due to the larger Venturi area…. So my question is if it is really a matter of air requirement, wouldn’t it be the same so long as it is getting the required cfm of air/ fuel?

 

[78_200_C4]

1 + 2 barrel cfm ratings are not tested at the same vacuum as a 4 barrel.
A 250 cfm 1 barrel only flows 176 cfm when rated as a 4 barrel.
I have read and from my experience a 2V gives better low end torque.
I don't know of a 1 barrel that can flow what my stock enginetech 256 cam 200 wants at higher rpm which is up to 5,300 rpm.
"One and two barrel carbs are rated at 3 inches of pressure drop through the carb, while all four barrel carbs are rated at 1.5 inches of pressure drop, which is more accurate. For example; a Holley 500-2V carb flows 380cfm when it's rated like a 4V carb."