I installed the correct clutch 9 11/16" it came with a small plastic spacer that goes on the end of the slave cylinder push rod. didn't remember that during disassembly but it won't disengage without it?
I thought surfacing the flywheel would take care of the rattle, I am wrong and disappointed.
I still have a rattle only when just letting off the gas in 3rd 4th and 5th. I stayed in 2nd and ran the RPM's high and didn't get a rattle but a whine. I am therefore thinking it is a bearing. The truck has 300k miles on it, supposedly the engine has been rebuilt. I don't think the trani has been touched.
All I can think is the bearing on the input shaft.
The list.
1. Rebuilt the rearend.
2. New U-Joints.
3.New (correct) Clutch.
Surfaced the Flywheel.Friction,Pressure,pilot and throwout new.