For 1950-1956 Chevy Bel Air Rochester 235 1bbl Carburetor 3.8L & 3.9L 235Cu 6cyl Specifications: Color: As pics shown Material: High quality Lightweight Aluminum Piping Carburetor Barrels: 1-Barrel Choke Type: Mechanical choke two bolt holes of the carburetor: 75mm the outer diameter of the top port for installing the air purifier: 58mm the diameter of the throttle shaft manifold hole: 40mm Fitment: Brand new carburetor, not rebuilt, 1950-1956 Chevrolet 235 w/ POWERGLIDE Vintage ROCHESTER 1-BRL CARBURETOR #7003536 used on 1952 to 1956 Chevrolets with 235 ci. 6 Cylinder engines and POWERGLIDE TRANSMISSIONS. It has a automatic Choke. It may fit other applications, as well. Suitable for the following Chevrolet models from 1950 to 1952: Styleline Deluxe,Styleline Special,Sedan.