i have a 02 z71 with the 5.3. i pulled my dads 16 ft horse trailer, i pulls like crap up one hill it went to 5300 rpm in sec gear with the cruise set at 60 mph. thought it was going blow. i dont pull a load much but i regret not getting a diesel. my truck get 19 mpg goign to waynoka at 70 mph the whole way. but if i putted a trailer my god probably 9 i bet.
now i debatign to trade it in for a diesel. ima chevy man but those powerstrokes are soem running bastards, cummins makes the best engine but dodge doesnt have the truck to handle it.
if you want a balls out truck get the international cxt.
http://www.navistar.com/site_layout/severe/cxt.asp
this bitch is bad ass