Carburetor cfm calculator

It does to me! When I use a square bore carb, it is ether sized small for a driver. Driven like a normal car. Or it is sized for the “Hot Rod” barreling down the road at WOT.

With a spreadbore, as long as the primary side is large enough…. It’s good for both.
I believe that's right in line with what the factory engineers thought. And I agree.