Update. Pulled the oil pan and rod end caps. All nuts were too loose, and #1 rod nuts I actually removed with my bare fingers.
No bearing damage. I turned it off in time. WHY this happened, I don't fully understand, I know I torqued them down. One explanation we came up with, is the ARP studs had not been fully seated and the fairly low torque spec was not enough to pull them all the way through. OR they stretched.
As I recall the instructions said not to use Loctite. Not sure anymore. None was used, I think I will this time.
Walking away from it for now to do some research
Edit: Yep ARP says only use their thread lube and torque to 47ft-lbs or stretch spec. I went with the torque number.
