Freddie, I went back to my basement library. The only listing that starts with 700700 ends in a zero. So, a 7007000 is a 1955 Oldsmobile four barrel carb. If your carb resembles the one pictured in the following link, I think the question is solved. Look at it and see.
carburetorcenter.com/1954-1955-oldsmobile-rochester-4gc-carburetor-remanufactured