The throttle bore is 1-9/16"; the mounting bolt spacing is 2-15/16". Not a knock-off from China (beware of those!).
ROCHESTER B-BC CARBURETOR KIT 1932-1962 CHEVY GMC TRUCK 216-235-261 ENGINES
Electric Choke Kit Rochester 1 Barrel BC Carburetor Convert Hot Air to Electric
ROCHESTER B-BC CARBURETOR KIT 1932-1962 CHEVY GMC TRUCK 216-235-261 ENGINE FLOAT
Rochester BC 1-Barrel Carburetor 7004915 1950 -1956 Chevrolet GMC 235 6-Cylinder
FOR 1950-1956 Chevrolet Bel Air Rochester BC 1 Barrel Carburetor 235 6cyl
