how much head flow to justify dually carbs?

(2) questions..........I currently have zero need to know,,,,just trying to learn a little mo etc........anyhow

How much air do my/their/them/your heads need to flow to actually make use of or need dual 4bbl carbs?

Once my/their/them/your heads are flowing that amount is their a benefit of running...lets say for example dually 500cfm 4bbl's vs single 1000 cfm 4bbl?

Bad Shrimp

:hiding: