Noise between bellhousing and Engine

Any thoughts on what this noise is between the engine and bellhousing? Only seems to do it when warm. Engine runs great and trans shifts fine. Maybe nature of beast but I'm not sure. Engine only has 700 miles on a rebuild. I put my ear up to the oil pan and don't hear any strange noises coming from that. Seems louder closer to thr starter. It's a magnum 360 with a 46re. Definitely seems louder on driver side.

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