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Group: Forum Members
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Hi fellas, Just want to lean on the wisdom of the group and see if anyone knows more info about this carb. This is what I’ve gathered so far, right or wrong- Autolite 4100 C2SF B A2JE C=1960-1970 2= 1962 S= Thunderbird F= General parts B= A= 2= J= E = Figure it’s 600cfm vac secondaries?      
Thanks, Dennis.
56 F100 - 272 Y Block
NSW, Australia.
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Group: Administrators
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Carter AFB carb in that last picture? As that Autolite carb is listed for a Thunderbird, it’s likely a 1.12” venturi model. The venturi size will be cast on the side of the carburetor on the left front side. The 4100 model carbs were manufactured as 1.08”, 1.12”, and 1.19” versions. Based on the date code on the tag, that particular carb was built on September 5, 1962. Ted Eaton (Mar-Apr 2010 YBK Magazine Issue #97)
A little clarification is probably in order regarding the cfm sizing for the Ford 1.08” & 1.12” carbs. Although it’s generally accepted that the Ford 1.08” carbs flow 480cfm and the 1.12” carbs flow 600cfm, these numbers have been since discredited by independent flow bench studies performed at Charlie’s Automotive in Apex, N.C... The newer accepted numbers are 440cfm for the 1.08” carbs and 520cfm for the 1.12” carbs. And here’s the link to where a variety of carbs including the Autolite 4100’s were tested on a Ford Y. Four Barrel Carburetor Testing on The Y – Eaton Balancing
  Lorena, Texas (South of Waco)
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Group: Forum Members
Last Active: Yesterday
Posts: 168,
Visits: 59.7K
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Thanks Ted, Yep, haha. That is a Carter afb, was taking photos of both carbs. Thanks for the link, I’ll have a read
Thanks, Dennis.
56 F100 - 272 Y Block
NSW, Australia.
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