Hay, we all do stupid stuff. I wrote the book. So it's a cable and not mechanical linkage? Either way, makes no difference. Here is how you do it. Block the gas pedal all the way on the floor (with the car not running, of course.). Now adjust the cable, or linkage so that with the throttle all the way open, the transmission lever the linkage or cable is attached to is all the way towar the REAR of the car. In other words, all the way to the REAR of the lever's travel. Then drive it. If you feel like it holds the shifts too long, then back off a little at a time....but that should get it right.
Chrysler Torqueflites MUST have that throttle pressure linkage installed. It's not just for kickdown. As the throttle is opened, more power is transferred to the transmission. The clutch packs are held together by hydraulic fluid pressure. Normally, as the throttle is opened, the throttle pressure linkage pushes the lever back on the transmission and increases the hydraulic line pressure equal to the amount of throttle opening. If that linkage is not hooked up, then there is no line pressure increase and nothing to keep the clutch packs holding the additional power as the engine RPM increases and the transmission will slip, starting in the highest gear first. Usually, when one starts slipping, the damage is done. Every now and then though, I've gotten lucky and stopped the slipping by hooking up linkage somebody forgot to connect. It's rare that happens, so get ready to tear it down.
