Well they are pretty bulletproof..... but as like anything else mechanical anything can fail. If i said i heard SBC’s were said to be solid but i heard someone called them junks every hotrod guy in the world would be ready to fight. They have tons of failure points and oil leaks and the list goes on. Yes some LS base engines run well over 250k with nothing more than a oil change. Some have oil pickup issues, lifter problems (usually DOD trucks), some head gaskets on earlier ones, piston slap yada yada yada. For the most part they are a reliable engine....i dont even count any sensor or sender as a part of a certain engine anyways. The truck itself may have multiple electrical failures or associated issues but the engine will most likely out live the truck especially in the rust belt. I have personally proven what they can do with over 250k straight outa the junkyard stuffed into a car and force fed to make pretty dang reliable power north of 540hp without ever pulling a head or the pan.
