6.7 Crankshaft, what steel and hardening process???

[DaCajun]

Any of you guys know exactly what grade of steel and what's the hardening process Ford used with these??? Thanks!!!

 

[DaCajun]

No one knows??? I thought you guys were this **** when it comes to these badass Trucks and it's 6.7!!! Come one now, help a brotha out!!!