good info on the link, I took note of this part.
Low/reverse piston: This is the large piston at the rear of the transmission's internal components. Never reuse casting number 8681725, as it is known to have durability problems. Replace it with one that has casting number 8685550 (GM part number 8685549), which is a much stronger piece.
I looked up the suggested part number and the casting is done much differently, however I did look over mine and it looks ok... I'm also not sure if this is a drop in part for an older 700r4...
Thoughts?
I also installed the new rear case support with the wide rear sprag, the ebay ad said it was from a 4x4 4l60e, it was a perfect fit!
Last time I also installed a "case saver" instead of the anti clunk spring in the low reverse clutch pack/rear case support.
I noticed I had a nice clunk last run, while taking the transmission apart I worked to find the source of that clunk, seemed to be coming in the direction of that "case saver"
I reinstalled the anti clunk spring, and I cannot reproduce the clunk any longer...
I also got my input shaft end play down to .008, pretty much the minimum...
and for my forward sprag, these are the instructions that had me put it in backwards, the first time around I used the video 99% and used the manual as a general reference for clearances.
From my 1984 GM manual
The video had me put it together so it turns in the other direction.
Might be the reason why my downshift was so violent...
also my overrun clutch was a bit burnt, not surprising since it was working pretty hard...
my 2-4 band was also a bit burnt, I assume it might be related to the backwards sprag...
the good news is the drum looks good, but I'll verify it's still flat before re-using.
I got the servo pin setup to be right at that minimum clearance as suggested by the super hold 4th servo instructions.
Maybe it might be a good idea for me to put it right at the middle of the suggested clearances this time around?
I bought a new band and overrun clutch pack, the forward clutch pack took some stress but it still looks good.