GMC,
I went under and all the bolts were tight. The ringing is just for a couple of seconds then it fades. I'll look again and see If I might have missed something.
Someone else was saying it might be the u joints, but they seemrd to be in good shape to my unexperienced eyes and hands.
I guess it is a Muncie.
Thanks a lot.

[ 01-21-2002: Message edited by: acme ]