Engine was rebuild with about 800km.
Tow the car home on Friday night. It was running fine, Only low oil pressure at idle when engine is hot.
I was driving on HWY7, 90-100km/h. Saw someone pulling up fast, so I floor it. Engine doesn't accelerate no slow down no stall just keep running at same speed. Let padel off, slow down a bit, hit it again, get to same speed and no more. Suddenly oil light come on, get to Yonge, stop at red light and engine die. Start it again, sounds rough with a clicking noise. Pull into parking lot. Oil full, no hole in oil pan. Let it cool down a bit. Start and drive off. Still clicking and no power. Get to Homedepot and Tim Horton. Park it and call for tow. Car too low need a flatbed. Got home try to start engine, everything good, no clicking, no oil light.
Thinking maybe oil pump pulley was lose, clean up garage drive it in. Started rough but no clicking. Remove lower belt cover. Pulley is tight like a 10 years old. Ok, oil pickup in oil pan lose? Drain oil and drop oil pan.

From underneath, cylinder wall looks fine. Cams are fine, need to adjust clearance. Metal are not high magnetic, just barely stuck to magnet. Anyone know what they could be?
Gonna cut oil filter and remove oil pump to see if there is any clue.
New engine?