Originally Posted by +fireamx

Chuck, If I'm not mistaken, all Chrysler Torqueflite 3 spd transmissions in the late 50's, 60's, and into the 70's had a "Kick Down Rod" connected to the carb linkage and the tranny. When adjusted correctly it would down shift the trans into 2nd gear, and even into 1st if the speed was low enough. All it took was moving the linkage far enough to engage the kick down rod that was set a a pre-determined spot on the carb linkage.
I'm not sure when Chrysler switched over to an electrical switch to activate its passing gear.