Yeah - I believe that is a standard upgrade at rebuild time, but ours went to 225K before I had'ta tear it down.
Then I couldn't git it figgered out. Seems I turned a valve around when dooing the valve body. My manual didn't have a pic of that particular valve (diff yr?) and it really was almost indistinguishable one way or the other. Had'ta take it to a guy that did them everyday...
It took him a cpl times to figger it out.
(And he's the one that replaced the shell.)
...Only to have a thrust go out a yr later. Complete train wreck inside!
(So much for the new shell. LOL!)
Bought a junk 700 and swapped in the guts and drove down the rd. That last time musta been maybe 90K ago?
WEhen I first tore into the 4L I figgered on seeing a hand full of selenoids and a cpl valves for line press and such and that's it. I mean - how much should you need if it's "Computer Controlled"? Boy - I koodn't'a been eny further from reality!
I still hafta question the need for all that complexity? I guess GM had more confidence in Hydromatics (ratt'cheer in Toledo - thank you very much!) ability to build good valving as Delphi's ability to map a good computer?
------------
Think Snow Eh!
Ox