If you have a 1952-62 Chevrolet 235/261 cubic inch six cylinder, the easiest way to have an automatic choke is to use a Rochester Model B Carburetor from a Power Glide car. They are almost a perfect replacement.
THE DIFFERENCE!
- Your pickup truck’s Rochester Model B Carburetor has the fuel line connected to the front. See below.
Truck Carburetor with Manual Choke
2. When adding the Power Glide Carburetor to a truck, the fuel connection must be moved to the right side. This allows the large automatic choke assembly to stay at the front which is the closest place for a vertical metal tube to reach the warm exhaust manifold. This required brass elbow fitting can be obtained from Jim Carter Truck Parts as part # MEE602.
3. As the engine warms, heat goes through a vertical tube and reaches the round choke assembly above. This gradually allows the round disc in the carburetor intake to open. A continual flow of outside air and gasoline can now enter the engine.
4. The vertical tube mentioned above is held in place by a “wrap around” sheet metal band surrounding the cast iron exhaust manifold. This is held in place by a ridge molded into this cast iron metal. See photo.
The ridge on manifold (without the sheet metal surrounding band.)
5. Therefore, when this car unit is placed on a truck, the change required is to simply add a MEE602 to the carburetor fuel intake position. The bonus is: The original truck horizontal fuel line will attach to the MEE602 and the job is complete.
You can now have your truck with a Rochester car automatic choke carburetor made for the same 235 engine. 1954-59.