It seems that cams in 6.4 truck engine get wiped out due excessive idling since they are mostly in commercial vehicles. I recently picked up a 2018 6.4 core with a bad cam for 650 dollars (the core charge) the motor has about 100 k on it . Tore it down to inspect and the crank and bearings where in great shape. I was surprised to find piston squirters. So if you were able to score yours for 250 good deal.
