650 or 750 Edelbrock on 340

Newbomb Turk said

Are you saying they measure the 2V carbs at 3 inches and convert it down? If that's true what I was told decades ago is wrong. And it may be. Now I have to go look up the venturi and butterfly sizing.

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One of the early lies I read in multiple rags, was that the 440 6bbls were 1350cfm, & the 340 6bbls were 1050. Once I actually had the Holley books & real 340 carbs in My hand, it was BS, but they are different in jetting/bleeds, etc. The other difference is the PVCR's in the center carb are staggered for upper/lower plane, & the SB & RB(at least the iron ones) have the planes reversed.
The outboards are 500cfm@3"Hg, & the center is 350cfm@3"Hg, as You stated tho'...converted to 1.5" it is lower...but it is a-plenty for a 340..