Carter AFB / CFM Chart?

• Sep 7, 2014

• #1

khryslerkid

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I've been trying to find a cfm chart or info on the Carter AFB carburetor. 1960 thru early 1970's. Most info is vague and it seems like any cfm readings are from someone doing a flow test on just a few models. Any info would be appreciated...

 

• Sep 7, 2014

• #2

texas69bee

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I don't believe there is such a chart. I think most 4bbl were rated at 670 "cfm"

 

• Sep 7, 2014

• #3

A383Wing

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most AFB's were 625 CFM...most AVS carbs were 650 cfm...I know of no "carb chart" that specifies CFM ratings

 

• Sep 8, 2014

• #4

Pops1967GTX

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Carb._________Venturi dia._________Bore dia.

CFM__________Pri.____Sec._______Pri._____Sec.

750 ................1 7/16.....1 9/16 ......1 11/16....1 11/16
625.................1 3/16.....1 9/16.......1 7/16......1 11/16
575.................1 1/4.......1 9/16.......1 9/16......1 11/16
500.................1 3/16.....1 1/4.........1 7/16 .....1 11/16
400 ................1 1/8.......1 1/4.........1 7/16......1 7/16

http://www.buicks.net/shop/reference/carb_cfm.htm
http://www.thecarburetorshop.com/Carbshop_carbsizesandCFM.htm

http://www.moparfins.com/Repairs/Carb/Carb_List.htm
http://www.imperialclub.com/Repair/Lit/Master/121/Page14.htm
http://www.jalopyjournal.com/forum/threads/cfm-ratings-for-carbs.327843/
http://www.hemmings.com/partslocator/carburetors.html

 

• Sep 8, 2014

• #5

khryslerkid

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Thanks Pops. This is what I was thinking and what I needed!

Like your new avatar! :headbang:

 

Last edited: Sep 8, 2014

• Sep 8, 2014

• #6

Meep-Meep

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Also note that Carter and Holley possibly rated their carbs differently. There is wet flow and dry flow and I think Carter used wet flow. The CFM rating on Carters from what I have known is about 570-585 for the 1-7/16" primary bores (340 and 383 carbs) and about 700 CFM for the 1-11/16" (440). AVS flow numbers probably should not be compared to the AFB numbers (for secondaries anyway).