You learn something new everyday. How long will an LA small block hold up at 550 horsepower

I don't like to name names.. but it's the same guy that thinks bearing clearance is an abstract idea so there is no reason to actually check it.
If it's the same guy I'm thinking of, loose bearing clearances are worth hp, and reversing stock pistons must be worth 10-15 even though it won't show on the dyno. I wonder if it works even better on aftermarket pistons?