2005 Expy 4x4 EB - New 6speed tranny?

[niveknonrev]

Are there any options to put in a better tranny such as a 6 speed auto in a 2005?
I have had it 2 yrs now and only 64K miles on it.
I pull a 31'(34'overall) TT weighs in 6600 dry so I pull it around 8k
it does ok once we get up to speed but with 1st gear running from 0 - 40 MPH and having to use WOT to get it on the interstate it can be tough.
Seems like it needs a lower first gear and then 1 inbetween 3rd and 4th for towing.

Maybe my TT is just to heavy but with a programmer is seems to run very well, and nice and cool, and shift nice and tight, just takes a lot to get up to speed and seems like its working too hard just for that time.

 

[Shadowless127]

Are there any options to put in a better tranny such as a 6 speed auto in a 2005?
I have had it 2 yrs now and only 64K miles on it.
I pull a 31'(34'overall) TT weighs in 6600 dry so I pull it around 8k
it does ok once we get up to speed but with 1st gear running from 0 - 40 MPH and having to use WOT to get it on the interstate it can be tough.
Seems like it needs a lower first gear and then 1 inbetween 3rd and 4th for towing.

Maybe my TT is just to heavy but with a programmer is seems to run very well, and nice and cool, and shift nice and tight, just takes a lot to get up to speed and seems like its working too hard just for that time.

8K is a lot to tow, especially since the tow rating is only 6000lbs. I suggest upgrading to an SD or Excursion.

 

[niveknonrev]

actuall tow rating is 8650 not 6k

 

[Dib52]

Easier to change the rear gear than the tranny. What's the current ratio?

 

[niveknonrev]

Well axle code on door says 16 so looks like it is 3.73 open - that is disappointing I was hoping it was a 3.55 or taller and I could upgrade to a 3.73 for more low end power.
there probably isn't one in between 3.73 and 4.10