i am not sure what is original with this engine. was told that it is a 58/62 261 with a 235 head. the carburetor is a rochester and it looks like it has had some heavy use. the top has a quarter inch lip that has at 180 degrees a bump up of an eight of an inch "stop?"

i would like to find an oil bath cleaner. and i think that the carburetor is going to need rebuilt or replaced.

any help along these lines would be greatly appreciated.