Stromberg carburetors usually have a stamped carburetor number, typically on the top of the carburetor (the float bowl cover). Some applications have a round disk with numbers, usually attached with a screw or riveted to the carburetor.
Location of carb number on Stromberg AA carburetor. These are sometimes on the left side of the float bowl cover instead of the right as shown.
This carburetor is marked with the carburetor number 7-37.
The first number, before the dash, is the manufacturer code number. 7 = Buick. This is an AAV-16 carburetor from a 1941 Buick Series 40, 248 CID.
This carburetor is marked with the carburetor number 3-39.
The first number, before the dash, is the manufacturer code number. 3 = Dodge. This is a BXV-3 carburetor from a 1939 Dodge D11, 218 CID Dodge.
Location of carb number on Stromberg WW carburetor. On GMC trucks the number is sometimes on a round tag.
This carburetor is marked with the carburetor number 6-132.
The first number, before the dash, is the manufacturer code number. 6 = Studebaker. This is a WW carburetor from a 1964 Studebaker Lark, 259 CID.
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: