727/440 AUTO shift points

[cv70chall]

Recently had a new stall converter installed and I think my transmission is shifting out of first and into third too quickly. I certainly don't want to burn up third gear, so can anyone tell me at what RPM/ MPH my car should shift into 2nd and then into 3rd?
Obviously I will need to adjust this. Is all done via the kick-down at the carb or below?

Thanks

[70chall440]

Has the transmission been worked on, meaning is there a shift kit in it?

Automatic shifting is done by the configuration of the valve body and adjustment of the "kick down" linkage. Down load one of the manuals and go through the linkage set up and adjustment.

 http://www.mymopar.com/index.php?pid=109

[cv70chall]

Hi,
No shift kit. The only changes made recently are a new torque converter and replaced a bad reverse band. It shifts way too fast- as in i'm already in third before I reach 25mph.

[70chall440]

need to try and adjust the linkage. That said, it might be more than just the linkage, I am not a transmission expert but I have worked on some 727's and as I remember there are some other possibilities. There is lots of information online on this topic.

[jhaag]

The "kick down linkage" (not really proper term) needs to be adjusted. You had to remove it to change the convertor, remove trans. It was not put back where it needs to be. As mentioned check the manual, or search on line for the proper procedure. I have not done it in over 40 years, but can tell you not to drive it this way or you will burn up the clutches in the trans...

[70chall440]

I haven't adjusted mechanical linkage in many years as I am running a cable on the 2 AT transmissions I have, that said I did look at the FSM and read the procedures, it is not difficult.

[cv70chall]

I have never done this- as my friend who helped me change out the converter wrapped things up while I was not present. That being said, can someone give me some simple "third-grader" instructions/ diagrams on exactly how to do this?
There is an adjustment at the carb and another at the transmission below- but I'm not sure which to adjust.
I just got this working and surely don't want to burn up the trans.

I understand shifting from 1-2 should occur at 15-20mph and 2-3 at 30-35mph when I accelerate normally. What is happening is that I'm going from 1st to 2nd almost immediately and into third at 10-15mph. This isn't right.

Help!!!

[70chall440]

Did you down load the manual? All the instructions and diagrams are in there. You want to follow the manual on this one, no short cuts or as previously mentioned you are going to burn it up.

Adjusting the linkage is relatively simple but must be done correctly. If you don't want to follow the manual, goggle it up and read through the forums, however the manual will be a one stop shop (not to mention being correct).

[cv70chall]

Got the manual. not to sound ignorant, but I don't see the proper diagram to follow- and am I correct in the fact that I should be adjusting the linkage at the transmission rather than the kick-down, as this has to do with up-shifting and not downshifting?
It's been a while and I don't exactly remember- and I certainly don't want to "F" anything up.

[jhaag]

You are controlling line pressure when you adjust this linkage. That's why it is important to get it right. Low pressure will allow the clutches to slip, eventually burning them up. I have not done it in over 40 years. Assuming that when the trans was removed you did not change anything at the carb, then the adjustment should be made at the trans. When the linkage was reinstalled I am guessing it is not set correctly. Watch the video link. Hopefully this will help.

https://www.youtube.com/watch?v=KsfI9cFFPpg

[cv70chall]

If I remember, we had the entire linkage off, so it could be either top or bottom that's off. I'll try moving the linkage forward and adjusting to take up any slack first, then drive it and see what if anything worked.

Thanks for the video!

[cv70chall]

Still trying to figure this out...Maybe over-complicating it.
I adjusted the kick-down bar forward about 2/3, and drove it. no change.
I then moved the bar forward all the way- drove it again- and same result.

One thing I think is missing- wasn't there a spring that linked to the assembly?
Again, nothing was adjusted internally (inside the pan), only the torque converter was changed, so something wasn't reassembled right.

[70chall440]

I see you have a spring so that should not be an issue per se. Are you confident that your throttle body isn't an issue?

[rusty dodge]

Bottom picture. I see the kick down rod is attached on one end to the silver spring. The rod appears to be pointing upward and question I have is what is the opposite end connected to? The opposite end not connected?

[rusty dodge]

Flat rod with slot on opposite end from carb - should attach to the kick down rod linkage like in picture