Ray said "Moparguy, I still have that van and it's still going strong at 361,000 miles. You can't kill that Detroit iron, huh?"
I've read of 50's vintage AD trucks going well over 200K miles. I do suspect these were highway driven work trucks that didn't spend there life on the farm driving dusty turnrows and dirt and gravel roads.
I'm not really in your league but my bought new 1995 Dodge 1 ton Cummins diesel is pushing 300,000 miles. All I've ever done to the engine is adjust the valves a few times (now I did upgrade the turbo, install bigger injectors and exhaust system, change the springs on the injector pump flyweights and tune on the afc housing

). All these enhancements caused the stock clutch to slip in 4th when pulling a loaded trailer so had to upgrade that.
But even with the power being increased by almost 100% I'm thinking I won't live long enough to wear the old Dodge out.
RonR
Thread hijack over, back to the stovebolt.