i pulled my buddy's car trailor with my manual and with his auto and held 70 mph on a good sized hill.The tow haul mode on the auto is awesome and with the exhaust brake with almost stop you with ourt any braking. I bought the manual so i could run the truck harder in the winter( i haul my boat all summer). Which is better? depands on personal preference

 

i have tore out severals autos in welding trucks over the years. i like my 08 with the auto in it with exhaust brake. they seem to be tough. i know stock manual clutch is weak on the new trucks but once you upgrade seems to be good. this new 68 has made a believer out of me.

 

03 S.O. horsepower = 250 vs. 08 6.7 horsepower = 350

100 more horsepower will do that for you

 

I use mine to tow around 12-13,000 pound and I got tired of having my autos rebuilt every 80,000 miles. So this time I went with the 6 speed manual and I don't regret it a bit. I can run 70-75 mph loaded and it will scoot right along with out breaking sweat.

 

I could feel the tranny slip and the RPM gauge confirmed it .... RPM's would go up 300 or so and speed would remain constant or drop slightly. Even at 250hp I should have been able to pull 6700 pounds with no problems.

It's all good though. The longbed allowed me to get the Titan fuel tank, which was an option I wanted anyway.



Kris

 

Stick all the way. Granted the new trucks don't suffer from the "slush box" syndrome that the older ones had but I like my NV5600 because I can drive all day in 4th if needed and it doesn't hunt - 'cause it can't.

It really depends. If I was doing lots of snow plowing or lots of trailer on, off crap the auto might be better but that is really I could think of.

 

i used to drive a 06 with a 5.9 6spd and i loved the way it pulled but my throw out bearing kept goin out every 20,000 miles. now i drive a 07.5 6.7 with an auto and it easily out pulls the 06 i had. it has 95,000 miles on it now and the only problem i have had with it was my turbo went out when it was under warranty. the auto tranny is runnin great and i pull goosenecks all time on my farm

 

Get an auto if you aint thinking about modifying it or adding some tuners and such, get the manual if you like shifting gear, towing, or whatever.. The stick shift is the way to go its been proven to take some punishment. I had an 06' Megacab auto and went through 3 transmission in a year with a simple tuner.. .. good luck on your decision.

-Juan

 

The stock clutch is just as much a weak point for torque management in the manual as the auto. Some people could break an avil in a sandbox.

 

auto cant handle the power and abuse that a manula can granted u have to upgrade the clutch it is a much better choice to go with an manual