Hi. I'll start by saying that I know close to zip about transmissions and wanted to get a better understanding of mine. My 70' CS is a column shift automatic with the 350 engine and the TH350 trans. It has the kick down cable which is linked to the accelerator pedal assembly and not the setup routed to the carb. It has a new kick down cable, new filter and seal and is in functional condition as far as I know. I don't have any issues with the trans and it runs smooth while driving but I rarely notice it shift from 2nd to 3rd gear. I would guess that I'm just not hearing/feeling it's not as if my engine is revving at high RPM's while in 2nd but I don't have a tach hooked up yet so it's just a guess. Drove it on the highway earlier this evening as it's been a while since I had it up to speed and getting on the pedal, she got up to 70 mph without any issues. When I was driving around the 40-50 mph range, I hit the gas and expected to feel what a noticeable change in gears (similar to modern setups such as a passing gear) but I didn't feel any thing other than smooth acceleration. Does this sound normal and I'm just thinking too much about this or is there something I should check?

 

stock GM transmission where meant to shift smooth, a harsh shift meant wear unless it was re worked for positive shifts .

 

Passing gear is activated by the kick down cable at wide open throttle. It may need to be adjusted.

 

 

There is a locking mechanism (left side of picture) on the cable, some are metal and some plastic. Jjust push it back, floor the gas pedal and it will slide back in place.

 

 

Who installed the cable? Was it properly adjusted at the accelerator pedal so it engages at the correct point in the accelerator travel?