on the other hand, could high rpm situations lead to rms fatigue/failure? (sustained) higher rpms may get the crank rattling about, augmented perhaps by an old/failing flywheel, and a resultant weep into the bellhousing?
i spent a day at the track the other day with a great deal of quality time at or near redline, and now have a seep at the transmission/engine interface as a result.
back on topic, as stated, your durametric will tell you good info; if you have an earlier car it will tell you if you over-revved, if you have a later car it will tell you how much over redline the over-rev was.
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