Rebuilt magnum 360 Noise

You said you had this same noise with same symptoms with a different motor?!?!
I would be looking over everything else trying to locate it before tearing into a fresh built motor..
You had alot of noise at first start? Did you prime the oil pump in tge motor before firing it off?
The noise is a little different but the symptoms are the exact same. Both noises are linked above. I ran the motor over on the starter with the plugs out and injectors disconnected but thats all I did for priming. Regretting it now. It only made the noise at a hot idle, but that noise has since gone away. Or at least as far as I can hear it's gone away. That's why I am dropping the pan and inspecting all bearings