::Could have been possible that the crank feed hole was blocked with debris from the bearing shell,rod or crank metal. Just a reasonable guess.
:
:I am not saying that your diagnosis is incorrect, just that it is possible in some situations to lose a bearing and maintain normal oil pressure.
:
::We learn from these experiences and it may be possible that at times in some engines that the oil pump is able to keep ahead of the losses from a rod or main problem. There is another possibility for this. The oil pump on the windsors is located in the front of the block as well as the oil filter and guess what, the oil pressure port is right at the head of the line so to speak so. I would guess that it might be possible to see a substanial pressure reading even though a rod bearing has gone south. If the pressure port were at the back of the block it would be doubtful if the same pressure would be seen under the same circumstance. The front main, front cam bearing and the lifter passages are the first to feed from the filter and could be possible to support a reasonable pressure reading even after the loss of a rod or a main down the line. The point at which we read pressure may not tell us quick enough that something has happened before more serious damage has been done. In a race engine for circle track, it may be prudent to consider the plumbing of a second pressure port off the rear of one passage in order to detect a problem earlier by comparing guage readings and save from more serious damage. Even go so far as to add a pressure sensor to cut ignition. The Cleveland series have the same general arrangement except the internal passages are routed differently and the pressure port is at the rear of the block but still is in a direct feed gallery. Years ago when NASCAR raced these engines, extensive plumbing mods were the rule due to the poor oiling under race conditions. Big blocks also had there pumps and filter at the front of the block but there was a pressure port at the rear. Oil pressure gauge reading won't always save the engine quick enough in some instances. Food for thought.
Ken