[busterbrown]

Hemi's like to rev, especially in the mountains. And even more so, towing in the mountains. I guess I could say that for any modern day gasser. Revving allows in the internals to cool and maintain temp along the drive line. All temps in your pic are very reasonable and expected on flat terrain. Remember, trans temps are less tolerant of heat and especially in the mountsins.. That's why a gasser needs RPM's.