I’m in the process of rescuing a 1974 v8s that’s not been used for some years. I got the engine running today without too many problems and bled the clutch. It selects gears fine and I even managed to get it moving under its own power, and got into 2nd gear on the driveway. There is a noise however when I bring the clutch pedal up. My thought is the release bearing needs replacing. Are there any other common causes?