Known overheat issues 4.7 RAM V8? EDIT FIXED

way too heavy. Cast iron everything! These newer motor were all cast aluminum with integrated water and oil pumps, serpentine drive, MPFI, yadda yadda. They couldn't save the Slant either, too small valves too long of a stroke. Bring it back in Aluminum with a redesigned cross flow head, EFI? Its still a straight 6, long and long for all the new transverse mounted platforms. Sometimes you gotta start fresh. Spitfire motor, over 300HP in a NA V6? Try that in a 5.2 with 2 less cylinders and a wonky balance crank.
The General and Ford had to travel that road also. The Pentastar has had some issues, Ford 5.0L mod loses valve seal at 60k to 100k miles. The head warps a bit. Usually just out of warranty, but if you take it to Ford for the misfire on 4 and/or 8, they will replace the heads. Take heads off yourself or a trusted mechanic and have the vavles and seats ground, and good to go. The GM LS has been fairly trouble free. That said, all three could have gotten similar results with a major redesign of the existing heads for emissions and economy. Ford was kind of on the right track with the Exploder/Mountaineer GT40P heads. Improved burn and no reliability issues. Getting headers to clear plug wires was an issue.