I used to run dual 750 cfm (Eddy 1407's, I think was the number) on my Hemi. Yes, they were rich to start but after playing with the metering rods and jetting 4 or 5 times It ran flawlessly, started right up, idled fine and was not too rich on the street. Hemi's like cfm.

1963 Belvedere 440 Max Wedge Tribute
1970 Charger R/T S.E. 440 Six Pack
1970 Challenger R/T, 528 Hemi
1970 Charger 500 S.E. 440 4 BBL
1970 Plymouth Road Runner 383
1974 Chrysler New Yorker 440
1996 2500 RAM 488 V-10 4X4
2004 3500 Dually Cummins 4x4
2012 Challenger R/T Classic.