what CFM would you use here

thanks Lance, I may have to put a 4 bbl. manifold on it. Have 2 of them but no time.
I just got a brand new 750 AFB and put it on my 440 and that puppy is rich. it runs good but it will make your eyes water lol

I use a 1406 625 on my basically stock 318 and it loves that carb