thanks air grabber i was trying to get one before the changeover to the 6.7 my 06 was a auto and it had 4.10's in it now the 07 i found is pretty much identical but it has a 3:73 in it i just wanted to know how much of a difference will i notice if any both trucks will be a auto thanks everyone for input

 

funyy i gross my trucks out at around 33k to 38k and they both are 3:73 and one is even a 5spd. I would take a truck with 4:10's unless it was an auto and i was going to keep it stock. i have been happy with these trucks and the other 4 that had the 3:55's in them before.

 

Well you should consider your driving distance. If you haul that much just around town then the 4.10 would be the only choice. But if you haul long distance the 3.73 would probably do you okay. Just a little slower to get it rolling, but once its there you'll be fine at highway speeds. But with that much weight you better put in a tripple disc converter to cut down on all that heat and slippage.