Rebuilt magnum 360 Noise

Bewy said
You can buy adjustable prods. I listened to the video & I do not think this a valve train noise because I could not hear the noise at idle, only when rpm increases.
What happens when rpm increases? Timing chain flails around more, maybe hitting something? I am not familiar with the magnum engine, but the noise sounds more like a rattle, like a rod hitting the oil pan.

Yea there is no noise at idle and the timing chain is brand new. But I will be dropping the pan to inspect. Hell I'd love it to be as simple as a rod bearing. Don't have to take apart the top end. Already have new rod bearings with me. Just waiting to find a day I'm open enough to do that.