For those of you who do not know the above advice is BAD advice. When you spin a bearing emery cloth will not smooth the crank journal enough to run. When you start up like that you will have a short lived failure mode as with a rough surface like that the bearing oil film will be almost nonexistent. If the engine actually developes 60 PSI oil pressure, the actual rod bearing oil pressure will be around 15 PSI! You are reading pressure at the oil rifle passage not actual bearing pressures. That 15 PSI is with a smooth journal surface and smooth bearing. You won't make it to the dealer. Besides, that is plain dishonest.

What did this engine die from? Oil passage obstruction in either the passage supplying the main bearing that feeds that rod journal or the obstruction is inside the crank passage from the main that feeds it. Take off the main cap and inspect the bearing. Don't know which main cap? push a soft steel wire into the oil hole and note whether it pushes to the front or rear. Then take of the corresponding cap. Then push that wire through to the main journal. Did something come out of the crank passage? The problem likely was caused by a portion of an old oil filter getting lodged in the oil passages. Consider getting a short block from Cummins or Jasper Engines.