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You really should get your hands on the factory service manual. The trans section will take you through the whole thing. It is a very simple and durable trans.

The linkage on the torque flight is actually called throttle pressure. It increases line pressure as you open the throttle. It is important for durability of the trans. If you have the linkage hang up at full pressure it will shift very hard into drive and reverse. The upshifts will be late and...

How far are you into the throttle when it kicks down? After 60mph or so mine stays in 3rd even at wot. My car has 3.55 gears.

Austin did it seem to shift and hold before the fluid change?

Austin you appear to have an adapter but your stud is in the wrong hole. Trans fluid on a mopar like yours is checked idling in neutral.

The linkage from the carb to the trans should move as the throttle is opened and end up with the lever on the tranny all the way back when the carb is wide open. The long slot in the bar at the carb is so that if the linkage sticks it can't hold the throttle open.

The linkage above should have a spring and the flat bar with the slot should be fwd against the pin.

Looks pretty well centered to me.

Gas in the diesel fuel was a common practice in cold weather to prevent gelling.

So there no possible way that there can be 29 psi when the pump is not turning. The sensor is bad.

Does the sensor show pressure when the engine is off?

The solenoid is at 90% because the transducer is reading pressure when it is actually zero. The solenoid would normally only be around 30%.

Make sure your kick down cable is not hanging up that will make it hold 1st down shift early ect.

When we had problems with the electronic governor we would usually replace the sensor and the solenoid at the same time it makes sense since your right there. I have seen the solenoid clogged with metal and garbage and not put out pressure. Another quick check is to just turn the key on and see...

The temp sensor is part of the pressure transducer. I never saw any problems with oil in the connector to the trans. That is an issue on Gm/allison trans. I did run into one ECM that could not control the solenoid correctly but that is pretty rare. There is a pressure test port on the passenger...

Those pressure sensors do go all the time. I seems to remember the output speed sensors would go as well. The speed sensor would set a code.

When clutches are slipping it can vibrate pretty bad. You getting a burnt smell from the fluid?

There’s 3 things that you can look at externally as far as the trans goes. The shift cable, kick down linkage and fluid level. If those are all correct then the problem is inside. Front clutch could be slipping or 2nd gear band could stay applied. The 727 is one of the easiest transmissions to...

How much did you drive with this trans before the cable incident? Was it a known good working trans?

Sounds like it has a slipping front clutch. How does reverse hold? What is the history of this trans? Is your kickdown/throttle valve linkage hooked up and adjusted correctly?

Do the converter bolts have a thick head? I would inspect the clearance between the block edge and the bolt heads too see how much room you have. I did trans overhauls at a dodge dealer for 25 years and we had issues with those covers rubbing with everything stock. I would flatten it out and...

If its not slipping your probably fine. If you had hit park while rolling you would have heard a loud ratcheting sound and as you slowed down the pawl would have caught and stopped you abruptly. You would have known it happened. The car would have been in park and you would have had to shift it...

These trannys always have some material in the pan. I would add a magnet of some sort.

Swapping the diff carrier only requires setting the backlash which is very easy on the 9.25 axle. Measure the backlash before you take it apart and set it the new diff as close to the original measurement as possible.

I don't think the backing plates will work. The 8 1/4 is a c clip style and the backing plate only uses 4 studs.

Maybe check the adjustment of the kick down/2nd gear band. Check the adjustment to the throttle valve cable.

You could beef up the tubes but the center housing is still thin stamped metal.

The shifter and the trans are not wired together. The trans wiring goes to the controller. What year trans and wiring/controller are you working with? What are you trying to do?

If you take it apart to do the front pinion bearing you will need a new crush collar and I would do the inner bearing also. Doing the crush collar is not a big deal. I have never done one with a removable center section like an 8 3/4. I would imagine the hardest part is holding the center...

I'm referring more to the sound not the speed of the vehicle. The pinion is turning much faster than the carrier at any road speed. So pinion bearing noise is a high speed sound that turns to a whine or howl. Carrier is turning much slower so the pitch is slower and growls. I would want to...