This was on a Chevy 454 Jet Boat, The boat was sold about 2 1/2 years ago and was working perfectly when removed. This carburetor was removed to install the original Quadrajet that came with the boat as the boat was sold. Has been sitting in the box wrapped in plastic until now. This was my father-in-laws and is being sold as is, I don’t know anything more about it. I think you could run it as is or rebuild.
