How many CFM for my 340?

67DartGT340 said

I have just added a rebuilt 71 Carter 650 AVS to my 340, and I find that it runs great on the street with the 3.55s and 323s before that. The hardest part was setting up the choke, a repo that needed quite a bit of tweaking. If you are going 3.91 you will probably want more cfm.

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So Im guessing Mark the gears are In Place? Everything works well? But I would say 750 is just fine, I run a 750 Holley On my 340 works little better than the 650 it replaced. Little more mid and top and really lost nothing that I can tell bottom end. The track will tell if all is well or better... my 2 cents D