5.7 hemi
The problem" from personal experience" has nothing to do with overheating etc..
The interference fit valve seats would fall out, not when overheated, not when on the freeway at speed but after just a warm up, park and restart after 20 minutes or so.
Failure is instant with no warning.
I have an 06 Magnum R/T 5.7. My failure was at 83,000 very pampered miles. Never got hot. Mobil 1 oil changes every 5k.
I drove to a DR. appointment, returned to car about 1/2 later. Started engine, instantly sounded like loose bolts in a metal coffee can.
Towed home. 2 dead cylinders with spark plug electrodes mashed flat. heads toast.
Replaced with remanufactured engine with upgraded valve seats, oil pump and timing chain tensioner.
Common problem on 03-09 5.7 Gen III.
Good short block and the money you saved can go towards upgrades.
