So my Durango with the 4.7 that wouldn't start has a broken timing chain on the right cam. It only has 140k and I have had 318/360 trucks that went well over 300k before they had any problems; and I have NEVER had a timing chain break during normal operations. I have had Chryslers most of my life and the worst thing I had was a spun bearing on a one ton van (at 350k). Does anybody know if this motor has a reputation for weak timing chains? I know they have gasket and EGR problems.