Eagle crankshaft

Ouch! The last time I saw anything like that was from a buddy running an engine built for dragstrip duty at ~8800RPM for about 7 miles. I used that lightened block to locate mounts in my car since much of the cylinder walls wound up in what was left in the pan.

How much run time did it have? Side clearance on the rods was good? I'd hope it was checked for cracks when the balance work was done. This is a head-scratcher.