Here is how the choke stove works. Your right side exhaust manifold has a " HEAT RISER " Its a hunk of iron with a butterfly and a spring. ( it is bolted between the R. Side exhaust manifold and the head pipe)When it is KOLD the butterfly is closed, This forces the engine exhaust from the right side to go through the exhaust crossover that is built in to the stock cast iron intake.
Now with all of this going on the exhaust heat ( going through the intake manifold) passing under and around the " COIL SPRING " inside the choke stove. As the coil spring get warm to hot it expands and unwinds, When this happens the coil spring inside the choke stove starts to MOVE the rod.
The rod that is being MOVED is attached to the Carb. butterflys.
When the butterfly is close or (cold engine). A closed butterfly will along with vacuum suck a lot of raw gasoline into the Q-Jet to keep a KOLD engine running.
When the engine gets warm enough to have the fuel " ATOMIZE with Oxygen "........... SCHZAAAAM the engine runs wonderful. YES a lot of parts to call it an automatic choke....... In the 30s--40s-50s you would find a knob under the dash, What did it do. This knob had a cable that was attached to the Carb. butterfly. This was a manual choke. With a manual choke you had to PUSH the knob "IN" after the engine was warm, If you forgot to do this the FREEKEN ENGINE would DRINK gas and not run for $H!t,,, you would get P!$$ed because you forgot to push the CHOKE KNOB in........
This message is about choking the engine not your chic---....