360 mystery breakdown

If you haven't yet; do pull the heads off to get a look at what happened. I'd be interested in good pics of the gaskets and the crown's of the pistons.

Hypers don't like detonation, though strong, they are brittle, at the very least the piston hanging on the rod with the bad bearing is toast. If the others check out ok, get one replacement, and one rod, put it back together.