i was thinking last night and this crossed my mind. With this mileage you could have dirty injectors that are causing a lean condition leading to detonatation. I would take the truck to a dealership for a fuel injector flush or at a minimum run a few cans of the fuel additive cleaner to the tank and change the fuel filter.
he is gonna bring me the truck on sunday . Im gonna take off the injectors and clean everything the best I can
weak rod bolts stretching, allowing the piston to travel to far at high rpm, next step is kablooey
that can only happen if I put a huge hood scoop on
The Rod bolts in these engines are not weak. No rumors need to get started.
yup.
Apparently you don't read much on this forum... There are plenty of guys who have well over 91K on their motors and run them hard without issues. Some even spray generous amounts of nitrous with over 100K on the clock without issues!!!
if you do good maintenance on them they will last a very long time. this guys truck looks like no maintenance was every done.
E, can we see a high resolution picture of the tip of the spark plug?
overnight me your camera to take some.