Engine/Trans Seriously Bad Noise

JRod01 said

Checked everything suggested so far. I may not have gone to a great depth to see if a lifter is sticking. The trans is now removed and I couldn't see any cracks in the flexplate or smearing on any bolts. I'm certain I seated the torque converter fully. I did suspect the starter but the bendix seems fine. No metal gouged on the flyweel or starter gear. And definitely filled to the proper level. If anything, it may have had too much in there. Could that have caused damage? Too much fluid?

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Not unless it was a bunch extra. Even then it doesn't usually make noise. Most of the time it pukes the excess out.

The time mine had the starter to ring gear interference it didn't leave any marks either. I didn't run it long that way though.

Have you tried spinning the input shaft on the trans. by hand to see how it feels and sounds? If not you might want to give that a try.

Did you pull the valve covers and spin the engine over to check all the rocker arms to see if any had a lot of play in it that would suggest a collapsed lifter?