There was a protruding tab, which was part of the Air Horn gasket, that showed the last four digits of the Carburetor part number as well as the code date of manufacture.
Also, once the original Air Horn gasket was replaced, the last four digits of the Carburetor part number was to be stamped on the bottom side of the Throttle Body assembly. Also check for a casting # on the front of the throttle body.
There could be a casting number on the inside of the float bowl
and on the inside of the air horn. Recheck the air horn on the outside top area for a 4 digit number.
If you find anything, post it and maybe we can help identify from those numbers.
Keep in mind that when carbs were rebuilt sometimes the parts got mixed together and used with another carb. Recently I purchased what was being sold as a 235 carb because the throttle base mounting holes measured 2 15/16. When I opened the carb up all the parts/ casting numbers were for a 216. It also had a brass tag and the tag # was for a 216. So I had a 216 carb with a 235 base.
