Following up on this one. My car is now shiffing the way it should. I made 2 changes, but i'm not sure if both were required.
1. I reinstalled the old Valve Body plate. I think going to the newer plate requires some kind of reprograming. There is to many differences in my opinion.
2. I bench blead the clutch packs and found the 3 plastic sealing rings I installed seemed to be leaking. I did have some trouble installing them as I don't have the correct tools. The second time around I covered the spline of the hub with packing tape and covered them in assembly lube. They slid on much easier, I then resized with hose clamps/the fourth gear hub assembly.
hopefully this helps someone else.
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1979 Firebird Trans Am 301/4spd (Now 428)
1977 Firebird Formula 400/Auto
2007 Grand Prix GXP 5.3L
Last edited by 74Grandville; 09-27-2022 at 04:43 PM.
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