What did you do to your truck today.The 3rd chapter

[MS66]

Originally Posted by 72c20customcamper

New shift shaft seal on the th350 . I had this rebuilt about two years ago either they used a cheap seal or never replaced it . The rubber was hard as a rock . The PMD products puller worked flawlessly . Took about 10 minutes start to finish the silver tool is the seal driver .

That's a cool little tool! And very well priced too.
Haha, your upside down pic had me wondering what I was seeing until I flipped it over.
I've built hundreds of turbos since the late '70s, and every shift shaft has a sharp raised edge where the flats for the shift lever are milled. I KNOW you didn't pull the shaft out to do this, but they should be dressed before the shaft is pulled through the case during rebuild to keep from cutting up the shaft bore. Why GM didn't spec that to be beveled is a mystery to me. I deburred all of the ones I did(before they came through the case), but every now and then I would get one in that had been driven through the case that hadn't been deburred. It leaves a nasty gouge in the bore, and usually ruins the seal if it goes back in without being dressed. Hopefully that shaft was deburred properly in the past.
I do have to ask, why all the blue silicone on the pan? Was that a problem with those pans, leaking? We never used silicone on pan gaskets, went together dry, usually cork. Looks clean under there!