This is more of a what is it? I was given this vacuum sec 4 bbl carb and believe it's off a Mustang, it was found in the company of 4 Mustang hubcaps. There are no visible names or casting numbers except a cast in date circle (clock) depicting 112 and 1.12 in the center of it. There's also a C _ SF B stamped on the edge of the base plate which is actually part of the main body. The _ represents a stamping I can't identify. Here are some pic's, any ideas who makes it? How about cfm? It's a square bore and the throttle bores are rather small...

http://www.camaros.net/pnwcc/DjD/odd_carb/odd_carb%20001.jpg

http://www.camaros.net/pnwcc/DjD/odd_carb/odd_carb%20002.jpg

http://www.camaros.net/pnwcc/DjD/odd_carb/odd_carb%20003.jpg

http://www.camaros.net/pnwcc/DjD/odd_carb/odd_carb%20004.jpg

http://www.camaros.net/pnwcc/DjD/odd_carb/odd_carb%20005.jpg

Update - I found the Ford script in a small oval in the center of the black choke cap, it is very faint.

Autolite 4100.

http://stores.ebay.com/Pony-Carburetors

http://www.ponycarburetors.com/default.asp?page=carburetors#autolite2100

Thanks Eric that was very helpful. Seems the 1.12 is not a date code but the venturi size and my carb is a 600 cfm manual choke carb used on 352, 390 and 428 and high performance 289's.