cfm carter ?

[Hern231]

We have a 67 coronet r/t 440mag 4 speed, books and charts say it should have a carter afb 4326s, but i can not find what cfm it is? Can someone help ? Thanks

 

[MercuryDon]

I believe the 440s are about 720cfm the 383s are about 620cfm. Someone correct me if I'm wrong.

 

[Red63440]

I am showing 650 cfm

 

[Pops1967GTX]

cfm are 625 by my local rebuilder sshop

 

[1badstroker]

I show the primary throttle bore for the AFB-4326s being 1 and 11/16, the secondary being the same. The venturi primary size is 1 and 7/16 and the secondary venturi being 1 and 9/16. That would put the cfm at 750 according to the carter information. To determine Carter AFB carb flow, measure the butterfly bores and use the table below:



CFM Venturi Diameter Bore Diameter
primary secondary primary secondary
--------------------------------------------------------
400 1 1/8 1 1/4 1 7/16 1 7/16
500 1 3/16 1 1/4 1 7/16 1 11/16
575 1 1/4 1 9/16 1 9/16 1 11/16
625 1 3/16 1 9/16 1 7/16 1 11/16
750 1 7/16 1 9/16 1 11/16 1 11/16

Hope this helps.