[DAVID GAGNARD]

Sounds exactly like the pilot bushing/bearing in the rear of the crankshaft that the trans. shaft rides on...........have seen it a number of times.........will shudder when you take off from a stop in first gear and not do it shifting thru the rest of the gears....

either way, the trans/bellhousing/clutch/flywheel all have to come out to be checked out........

David