The only crank I ever broke was a Crankshaft Specialist forged crank that broke on the number 5&6 rod throw. Totally broke off of the crank and into the side of the block.

2013 NHRA D4 Stock Champ
#4 in the World IHRA Stock
2x IHRA Div.4 Stock Champ
14x Track Champ
All using a Ultimate Converter Concepts converter. Call Lenny today 704-892-6837