i rebuilt a 440 with the stock cast crank and verything else stock in it except the cam. i used it in my 66 dodge tow car with the old 60's long rams on it for years. then removed it and install in the 66 baracuda bracket hotrod and went 12.20's for a few years. after that it came out and went into my 66 satelite for a few more years to test plate nitrous systems i was building. it would run low 11/s on 3 stages but finally broke the tin valley pan and sucked the heat insulator into the motor and spun all the bearings. so in retrospec they are ok to use for what he wants to do with his motor.