Message #235754

[DangerZone]

6.4 will get u 15-18 on avg. I been working on ford diesels since the 6.9 in the 80's  the first couple years of each eng had it's problems. I don't like the 6.4 it was a bandaid eng so ford could meet emissions till the new 6.7 got though R&D. If I was gonna buy used I would buy a  99-2002 7.3 or a 05-07 6.0. If you buy a 6.0 and spend the 3000$ to stud the heads and delet the egr cooler you'll have a bad ass diesel that will get ya over 20 mpg.