440 czrb CFM questions

[FJ5 1970 440]

What CFM carb would have came on a 1970 440 HP engine? And what CFM carb would have came on a 1973 440 truck engine ?
Thanks all ..............................

 

[Chryco Psycho]

The70 440 4 bbl would have not much more than 650 CFM which is far too small .
the Thermoquad was used from 71 on , 850 cfm which is about what the 440 needs for enough airflow .