muncie 4speed trouble?

[stubby1962]

Hi All:
I have a problem with my transmission maybe and need some expertise on the problem.
I down shifted from fourth to third and heard a noise. It appears to have all the gears and drives, it is quiet as long as I hold in the clutch, but when I let it out about half way it make a terrible racket. While I have it in neutral and let the clutch out it tries to move forward and makes the racket. I'm hoping that maybe the pressure plate has messed up. Does anybody have any idea what it maybe? I haven't dropped the transmission yet to see if it is in the clutch,pressure plate or throw out bearing. I'm just kinda wanting to know what it maybe. I thank you all in advance and God Bless US All...John