Technical Early Carter AFB ID??

Anyone know how to tell what cfm this carb is?

 

Henry29...looks like 1957 Pontiac...I couldn't find cfm online...but I'd guess its 500 to 600 cfm..the early stock application like yours weren't super big cfm wise if memory serves..

 

you could measure the throttle bores, and compare with sizes for the newer carbs with published CFM ratings, to get an idea.

 

It looks like the later carbs are all the same bores with larger or smaller boosters to limit air flow.

Edelbrock Performer Series

Edelbrock Performer #1403
* 500 CFM
* Primary ....... 1 7/16" ..... Venturi ... 1 3/16" ..... Primary Jet ....... .086" ..... Metering Rod ... .065"
* Secondary ... 1 11/16" ....Venturi ... 1 9/16" ..... Secondary Jet ... .095" ..... Metering Rod .. .052"

Edelbrock Performer #1400
* 600 CFM
* Primary ....... 1 7/16" ...... Venturi .... 1 3/16" .... Primary Jet ...... .098" ..... Metering Rod ... .073"
* Secondary ... 1 11/16" .... Venturi .... 1 9/16" .... Secondary Jet .. .095" ..... Metering Rod ... .047"

Edelbrock Performer #1411
* 750 CFM
* Primary ...... 1 11/16" ..... Venturi .... 1 7/16" ..... Primary Jet ..... .110" ..... Metering Rod .... .075"
* Secondary .. 1 11/16" ..... Venturi .... 1 9/16" ..... Secondary Jet ...075" ..... Metering Rod .... .047"

Edelbrock Performer #1413
* 800 CFM
* Primary ....... 1 3/4" ...... Venturi .... 1 17/32" .... Primary Jet ...... .113" ..... Metering Rod .... .108"
* Secondary ... 1 3/4" ...... Venturi .... 1 5/8" ........ Secondary Jet .. .071" ..... Metering Rod .... .047"