Carb ID

paul2748

paul2748

Well-known member
I have 4100 that I want to identify. The tag says C6SF A. Other numbers on the tag say A 5GD. It is 1.08 carb.

Any one give me some more info on it. Other than I know the year is 1966 and since it is 1.08 it's probably for a small block, I have no idea about it.

Thanks
 
Yes, it's a '66 Thunderbird 390 carb. They usually put 1.12" carbs on 390's but for some reason used the 1.08" in '66. The 5GD means it was manufactured in the 4th week of July, 1965 (early '66 production).


Sal
 
The Autolite 4100 carbs with 1.08" venturi are supposed to be about 480 CFM. The 1.12" carbs are supposed to be about 600 CFM.


Sal
 
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