I have a 2008 hemi its a great puller. In tow haul mode I run between 50-55 around 2000 rpm, handles my 10,000 pound 5th wheel with ease. I have the SXT in the 2500. Pretty flat where I tow and I rarely go over 3,000 rpm. Awesome engine, my next tow vehicle will have the 6.4 hemi most likely.