>>28588021 (OP)
We've had this tread a few times.
In no particular order
A model T engine, they can be out in a field for decades and as long as they aren't locked up, they'll run. Biggest problem they'll have is stuck valves.
The ford flathead. Same as above.
The chrysler inline six leaning tower of power. They are gutless while guzzling gas but will sound like a sewing machine. Although that's the same for the ford and chevy inline sixes as well. Boring, slow, but reliable.
The chevy smallblock. Another pull it from a field and throw some gas in it and it'll go.
A 12 valve cummins. It takes a lot to kill one.
The CAT 3408 They need some cosby sauce once the rings start getting shit.
The CAT 3306 Worst thing with them is a stuck fuel rail.
Most 90's LS engines. Before they filled them with too many electronics or cylinder deactivation.
Most of the 90's honda and toyota inline 4s. Most of them survived the fags and the feisty years.
Generally though, large displacement low power engines tended to last a long time. I doubt in 50 years we'll be able to pull some turbo inline 3 out of a field and make it run.
