Narrow flange bearing ate the wide flange crank! Now I've learned something new. Thanks!
I wonder what the chances of this happening with the correct thrust bearing installed?
The damage is on the rear thrust side. It was connected to an auto trans. The motor has 1,000 miles or less. I've never had it on the track, but I do like to accelerate at WOT when I have the space. The only questionable incident I can think of is when I hit a small patch of mud and lost traction.
The replacement crank is steel.