This is a vintage Rochester one barrel carburetor for a vintage Chevy/GMC inline 6 cylinder engine. This is a very clean complete carb. I am selling it as a good core in need of rebuilding due to decades of storage. This carb looks to be in very good shape. This carb is unique since it has a thermostatic choke. Most I have seen are manual choke. This carb is very clean and all parts move freely. I see no breaks, repairs, or modifications. These old carbs are getting hard to find, especially in this awesome condition.