408 Crankshaft

I know I'm going to get comments like your lucky and change it now.
My Mopar 4" cast crank is still going strong after 5 years, hours of Dyno runs( well over 60 ). 1/4 mile runs close to 80 and I've not had a problem. Yes running close to 500hp.
Before and after every test on the Dyno and meet I drop the oil, change the filter and give it a check over.
This year I'm stepping up to well over 500hp so for safety and back pocket insurance I'm going forged.