Ford carburetors came with tags, typically attached to the top of the carburetor. Some models were stamped with a partial carburetor number on the face of the mounting flange near the front left.
Ford 4100 tag. Most Ford carburetors had similar tags.
This carburetor is marked with the carburetor number C3AF-BV:
Build date code A 3KB:
The original application for C3AF-BV was a 1963 390 CID engine in a full size car.
The number stamped in this location is a partial carburetor number, usually consisting of the year, model and revision code.
The number 6ZF E is equivalent to C6ZF-E or C6ZE-E. In this case, it's C6ZF-E, which is for a 1966 Comet, Fairlane or Mustang 289, A/T w/ Thermactor.
This carburetor is marked with the carburetor number D7UE-ASA:
Build date code A 3KB:
The original application for D7UE-ASA was a 1977 Ford 460 in a truck.
This carburetor is marked with the carburetor number D0OF-AB:
A date code is not shown.
The original application for D0OF-AB was a 1970 Torino, 351C M/T.
Once you have the carburetor number, you can look up the basic parts in the numerical index, which also links to a page with a comprehensive parts listing for each Carter carburetor number: