I would say that the ultimate test would be an engine that lives to 10,000 rpm and won the 1979 pro stock championship driven by Bob Glidden is enough ample proof for me.
If you can’t see what was in the pan you have no idea how he corrected the oil timing.
I’m also sure that he wasn’t near the 10k, even if they corrected the lifter bank angles.
You can use the best MPH you can find and a rollout of about 102 inches and you’ll see maybe 9500. Maybe.
Plus, unless you were at the track and they pulled the intake off and you actually saw the crossover you can’t be sure what they were doing. And even then, any of that could be for show.
Big daddy put body panels on to cover his 1 inch fuel line and blew all their doors off. So everybody started putting body panels on their diggers, thinking that was the fix.