1970-71 Ford 429CJ Rochester 4V Divorced (Pull-Down) Choke Assembly-Ford 429SCJ 6V Intake Manifold Divorced (Pull-Down) Choke Assembly

                                                             

Pictures from Tim Smathers of his personal 1970 Torino 429CJ with divorced choke

Ford Master Part Manual 1965-71 Page 2042 Divorced (Pull-Down)Choke Listing Highlighted

D0OZ-9848-1 Divorced Choke LIsting Ford Parts Manual Page 2042

 

 

 

The original Ford divorced choke is a “Pull-Down” choke meaning the coil spring as it heats pulls down, pulling the rod attached to the carburetor choke plate down which opens the choke plate fully in the carburetor. Holley 2300s in the 66-70 Corvette 427 3×2 2300 carburetor 3×2 setup work in this manner (require a pull-down choke coil) as did the Rochester 4V carburetor associated with the 1970-71 429 CJ only.

The rare alum Ford 429SCJ 6V alum intake manifold is designed to use the original factory ford stove tube attached to the intake with the 1970-71 Ford 429CJ divorced choke part number D0OZ-9848-A attached above the stove tube on the intake manifold.

The original divorced choke for the Rochester 4V carburetor was intended to be used with the Holley 2300 6V carburetors except that the attached rod to the Rochester 4M Divorced Choke assembly is not long enough to allow the choke plate on the center carburetor to close or be correctly adjusted. I tried straightening out my original choke rod but the rod was still too short so I have removed the original choke rod and made a new longer rod to connect the Rochester 4M Divorced Coke assembly and the choke plate connection to the center Holley 2300 6V carburetor.  By making a longer rod, the original and stock divorced choke assembly for the 69-71 Ford 429 CJ Rochester 4M Carburetor will work.