How many CFM? '76 360 2bbl

Bear in mind that a 500 2bbl, is not a 500 4bbl. The 2bbl carbs are rated at different vacuum drop than 4bbl. Seems to me a Holley 500 is about the same as a "would be" 350 4bbl.

I've forgotten, I think it's 3" Hg for 2bbl ("more suck") vs 1 1/2" Hg for 4bbl

Holleys are not rated same as Carter, either.

......And then there's "rated wet vs rated dry"