Tremec T170 Transmission Troubles (this issue may be a puzzle)

[MALAK]

Could be clutch hub spring, see pic, or broken Bendix bolts. This just happened to my A a couple months back. The springs pictured are from the hub of the disk. It made a noise similar to what you described except ALL the springs came out and the car would no longer move due to the clutch being permanently disengaged. I could start and run the car and occasionally hear something (1 of the springs) bounce around in the bell housing.

Since yours has had a trans conversion I suppose the broken Bendix bolt is less likely depending on whether, or not, a Bendix has broken since the conversion.

This same car had the engine lock-up due to a leftover broken Bendix bolt and there are many stories of the same (or noises) happening to other people.

Tom