That's what I was thinking based on your posts. There is a high likelihood your carburetor has been rebuilt by somebody (or maybe more than one somebody) along the way. If it has a manual choke it is likely a B model. If auto choke, somebody swapped a BC. Jon H can help you figure it out and will be able to get you the right kit. Soon there will be a TechTip dedicated to the Rochester and it may also be of help.


~ Jon
1952 1/2 ton with 1959 235 | T5 with 3.07 rear end