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wmoses's avatar
wmoses
Explorer
Jul 12, 2013

Anyone changed their rear end for more towing capacity?

I am considering upgrading my RV to a TT that as a GVWR of 7500# which is about 500# above my TV rated capacity. I have a 3.08 rear end and from what I can gather, a similar truck as mine with the ...
Tow Vehicles
gmcsmoke's avatar
gmcsmoke
Explorer
Jul 16, 2013
APT wrote:
gmcsmoke wrote:
your spreadsheet is wrong the 6L80E has a 1.2 4th gear


Where did you find that? I have seen several references to 1.15.


Wmoses,

Isn't your TT like 5500 pounds dry? You are likely in the 6500 pound loaded range for a couple's worth of gear.


the fleet ordering guide and GM powertrain have it listed as 1.2

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