82 Firebird Auto Tranny: rattling noise
new member here, just registered after looking at some great posts and feedback. Excellent forum!
Summary: when driving the car (only slow speed so far) there's a random metallic clanking sound emanating from the front of the transmission/rear of the engine. It's been hard to isolate as it only happens when the car is in motion. Easy to hear from even 20-30 feet away.
Background: my son & I are nearing completion on his vehicle restoration project... car has ~65K miles on a rebuilt 3-speed auto, the starter gear occasionally grinds with the ring-gear/flywheel during startup, and the car was absent a lower bellhousing/torque convertor access cover. I can't see anything unusual on casual inspection. Since the lower cover isn't installed I have a hard time thinking this noise is caused by broken flywheel teeth rattling around as they'd have fallen out, sounds more like a loose bolt or something (?)
We plan to replace the starter motor & flywheel to resolve the grinding problem. Any suggestions on the noise source?