Crank breakers wanted

I snapped a 69 440+6 crank right in front of the flywheel in 1974. Hard launch 4spd. Dana 410's 69 Coronet with Race Masters. Put a magnum 4bbl in out of my other wrecked R/T . I did many of the same launches with no problems. I would say some things are just flawed and those are the risks of the game.

I was always a confirmed believer in steel cranks. I won't build a High torque motor for myself without one . Why? Because I like the big torque on the bottom and high 8000 rpm HP on the top . I never broke a Cast Crank but I never had one in a Race motor. I just was worried about all the other parts it would destroy .

I did have a RB rod shove two cam lobes up through the intake though.