Engines that are set up for maximum performance are absolutely not designed for longevity, so I would guess that after a record run like this it would be torn d

Engines that are set up for maximum performance are absolutely not designed for longevity, so I would guess that after a record run like this it would be torn down and rebuilt sooner than later. For drag racing, engines are fully rebuilt after every single run due to the sheer amount of heat & stress put on it. On the other hand, you have plenty of old V8's built decades ago still running just fine with regular maintenance. Low output, low stress, long life. For example, toyota de-tuned the 2UZ engine in the original Lexus LS400 to make sure it would be as smooth, reliable, and durable as possible because their reputation was staked on it. Modern engines with small displacement and high boost turbos will probably not last as long as their predecessors because of the high stress, high heat, and low tolerances. We'll see in a few decades, I guess.