Sorry I haven't posted in a while. What I am towing is not at the limit of any truck listed. I towed a trailer (Guesstimated @ 6000 lbs) with my 2008 Silverado 5.3L with the 4-speed automatic. It seemed like a harder tow than I expected, and with only 4 gears downshifting would really make the rpm's climb. The truck has 100k miles, so I didn't want to labor it too hard. The truck got good MPG's empty, so I really thought it had a higher rear axle than I later found out to be which is 3.73.
My option was to tow it with my Ford 5.4L with 6-speed automatic. It has 3.73 gears and is rated as having more torque (but that is based on Flexfuel ratings- regular gas lowers the power). I was convinced the Ford would tow it better.
Those were both trucks I owned. So to downsize, I was thinking of selling my 2008 Silverado and keeping the newer Ford. BUT, I don't tow frequently and the Ford gets about 3 less MPG.
So then I thought instead of losing 3 mpg on a daily basis for an occassional tow, maybe I should look into the new Silverado with the 6 speed. It has available 3.42 gears (still thought my '08 must be running 3.08 or 3.42). NOT CORRECT BUT THINKING BEFORE I KNEW ( instead of somebody saying not available, etc) I figured the new 6 speed tranny in the Silv. should tow better than the 4 speed even if geared the same. So I was almost convinced to sell both the Ford and older Silverado for a newer Silverado.
Then I found my 08 Silv. had 3.73 gears. So I then became concerned that the 6-speed Silverado may not tow any better since it offerred 3.42's as the lowest gears. So 4 speed 3.73, or 6 speed 3.42???
Seems obvious on paper the Ford should win this fight, since it has the 6 speed and 3.73 gears. But since I am not towing at limits and only occassionally, should I even worry about which tows better. But that throws me back to lower MPG's daily. Plus the fact the Silverado (IMO) is more comfortable.
Other factors came into my mind as well, but I did end up selling the Ford and older Silverado and purchasing a Silverado with the 6 speed.
Hopefully it will last a long time, and thanks to all for your input. So far I am happy!!
:thumbsup: