91 Z28 700R4. Transmission disassembly. Transmission on side upside down. When I pulled out the low/reverse clutch assembly I heard it fall and it was laying right in front of the low/reverse piston. It is slightly concave, (running up & down) at this view. Only one shiny mark on it as seen. I have looked at every diagram I can find but none of them show this part neither does any utube I looked at. Any ideas??? Do I need it? If so how is it positioned?

 

Has anyone ever seen a part like this? Any info at all would be helpful & appreciated. Thanks

 

https://www.chevytalk.org/fusionbb/s...php?tid/20728/

 

That sounded like it so I googled "case saver" THAT'S IT. Thank you so much. No just to figure out how it's positioned. I will be talking to Pro Built in a week or so and will ask him about it and about the anti clunk spring. Thanks again.

 

You're welcome, sorry it took so long. I read your post last night before I fell asleep and forgot about it until this morning

 

I found where it goes. There's a mark on the case. It lays right in there just as nice as can be. Thanks again.

 

This is one of three different versions of what is called a "case saver". This takes the place of the "anti clunk" spring. This should only be used when the aluminum case lugs are very worn.

 

Post an Image of the Empty Case, so we can see the Case Lugs.


-If the Lugs are Bad, time for a new case.
-If the Lugs are good, time to find an Original Anti-Clunk Spring.

Those Case Savers should only be used as a Temporary "Band-Aid" to keep the Vehicle Going until the next Transmission Rebuild.

 

The first pic (right side of case) is the worst by far but I think a file will take out the marks. The left side are light marks. And the bottom is barely noticeable.

 

My eyes are not the greatest... so help me here...

I see some grooving from the Steel-Plates of the Low-Reverse Clutch (Not terrible if I see it correctly).

The "Case-Saver" is for Case Lug Wear and Tear in the area of the Cast-Iron Support with the One-Way Roller-Clutch.
(Look good from what I can see).

I would probably do some clean-up/ smoothing, and Use the OEM Spring.

Let some others look at the Photos too, and share their opinion

 

I was hoping you'd say that. I did some filing on areas that needed it and they look pretty good. Like he said, more opinions wanted.