Inliners International Forums General Discussion Engines Rochester B identity

I was given a Rochester B carb and would like to know the application. I plan to use a two carb setup on a '56 235 with a mild tune primarily for street use and will need a second carb with matching numbers. The carb has no tag but the cast raised numbers on the bottom of the bowl read 7004497-C-25. The steel base section has 7004518 C and 18. The diameter at the throttle plate is 1.5" and my best measurement at the venturi is 1.34". All I can find for an application is a 216/235 from '32 to '56.
Is this carb a mixture of parts or are the differing numbers normal? Which set of numbers will I need to find a matching carb?

216 B is 1.218" venturi, and 1 1/2" throttle bore. Bolt spacing is about 2 3/4".

235 B is 1.343" venturi, and 1 9/16" throttle bore. Bolt spacing is about 2 15/16".

Sounds like a 235 carb with a 216 base.

Can't help with the numbers, as i would suspect there are more than one that would work anyway.
You need to determine what bolt spacing the intake has, and use whichever carb fits. You need to take measurements to be certain anymore with these carbs.
It is possible to use that carb as is, but the other one would also need to be of the same configuration.

Try this link from post #45423 - 11/24/08 07:24 PM
http://www.oldirononline.com/
Scroll down on the left side is a whole section on Carburators.