Inspection of a 904 torqueflite

CudaFactHackJob said
Please post a quote of my post saying that the output shaft does not move so I can edit it. But you are incorrect in saying that the tailshaft bearing snap ring limits forward travel of the output shaft. The bearing limits rearward movement of the tailshaft; whereas the snap ring does almost nothing. Sort of like the snap ring on the front of a th350 output shat; it has no purpose. You're overthinking any effect the forward movement of the yoke can have on forward movement of the tailshaft. As if the yoke can push the tailshaft and all internals into the pump; destroying it..no way. I would not advise the op to purchase the gearset unless I was prepared to reimburse him if it isn't want he wants. I would feel responsible in giving such advice if it was incorrect.

There are 2 snap rings. One keeps your bearing in position on the output shaft. When you put your output shaft into the tail shaft, you spread the other snap ring through the removable cover. That snap ring locks the outside diameter of bearing into position.
Even though it's locked, there is still a small amount of movement that is possible. Snap rings can take a tremendous amount of force.
A small snap ring holds your entire planetary assembly from coming apart. If you can push your output shaft forward with your hand on your workbench, you don't think the inertia of the driveshaft sliding on the yoke at 60 mph can do the same. There's all kinds of forces there.
I have answered the low gear set multiple times. The op posted a picture of a low gear set. A picture. I did not tell him to buy anything. I said he was correct that the picture he posted with the unique sunshell is what a low gear set looks like and that if he used all those parts, he could put a low gear set into his trans assuming the parts look like the ones in the picture.
Perhaps you need to provide an explanation as to why you check the input shaft endplay. What do you think is the reason those specs are provided.?