They also have a habit of dropping valve seats when overheated much.
Agree, I have one and they ran it without water, seats swapped cylinders. Also the oil pumps where inadequate from 03-07 after that they used 6.1 pumps( this would be the first thing replaced if buying those years). Have three of them like that. Junk yards are getting $1,700 to $2,800 for used running engines because of these problems around here. One of the largest auto auctions on the east coast in town here, lot of dealers, so they see the most that's broke. Always these same two problems, mechanic next door has done 9 in the last year and a half. I get the best usable ones.
