I can't answer on the new 2010 models but I have a '06 4.7 myself. I have towed a camper, boat, and trailers with mine. I haven't had any problem towing. It isn't going to have as much power going up grades as a hemi will but will get the job done. I bought mine with 60k miles on it last year and have put 10k on it since I bought it and haven't had one mechanical issue.