I putting this out there to get some feedback? What do you guy's think about Carter performance four barrel carbs? Have you or are you using them? How were they any problems? I'm looking at using a set on my Edelbrock dual quad intake!
Not crazy about your choice of intakes, but 2 genuine Carter AFB carbs, properly sized and calibrated for your application, should make you smile. Have run two 625's (AFB's) on a 390 for 21 trouble-free years. Have run an 850 (TQ) very successfully on my highly modified Pontiac 350 for many years. The quality is there. You need to determine which ones to use; and calibrate accordingly. Jon.
I ran 2 Carter 500 CFM carbs on the Edelbrock intake in my Coupe for 18 years. Proper set up, calibration and tune in the beginning was all I ever had to do, ran like a swiss watch.