if your the one that crossed up the lines, then this falls on you. doesn't take but a few seconds to do some damage without oil between the parts.
In theory engines ALWAYS need oil pressure.
Fact is, I've seen them run without MANY TIMES..... and live.
Here are my examples.
Had a 70 Road Runner. 11 sec machine with a stock 440 short block. After launching oil pressure would drop to zero for about 2 seconds.
The oil would all fall to the back of the oil pan and the pick up would suck air.
Baffling cured this but we did for years before realizing and correcting.
Next ex. 383 Dodge Dart. Out racing, car suddenly running on 7 cylinders. Figure it's ignition, lets just drive it home. During the drive I notice 0 oil pressure. Oh well, made it this far, keep driving.
Broken rocker arm. Push rod falls out, lifter pops out of valley. No lifter equals full oil pressure feeding an empty lifter bore. ****. Pull engine figuring on replacing all bearings and machine crank. Guess what. Everything like new inside. Obviously some oil getting to bearings. Plus, no racing, just nursed it home. Engine still lives 15 years later.
Last one is after an oil change, even with a filter pre fill. There is a moment with no oil pressure.
"These motors did not have anywhere close to the tolerances of todays engines.
Do you know what it takes to build a 440 in a 70 chalanger to run 11s?
Plastigauge would disagree with you.