Let's remember that the 4.7 is only 286cid. We kinda loose track just how small an engine it is with the use of the metric numbers. And is just a bit complicated and fragile especially for a truck engine. Lots of premature failures. Of course, some go on forever, but then some early 2.7s went a long way too.

The 4.7 is just a crap shoot. Some deliver a good life span with minimal intrusive repairs while others break parts that require major dollars to fix. You just never know which you will get.