Crank breakers wanted

Never broke one personally. Had blocksvfail. No cranks.

a friend did. Used an ex-fueler crank in the days before big aftermarket support of longer strokes. Had cracks but his builder assumed “if it held 4000 it will hold 1200”. It held it for the dyno. Came apart at 1000’ on its maiden run, taking the side of the block and a front tire with it. Car in the wall.., etc etc etc.