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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
APT's avatar
APT
Explorer
Jul 12, 2013
If you want to change, see if there are any 3.73 or 4.10 out there. They cost the same and labor is at least much as parts. Do it right once. GM only offers 3.08 and 3.42 in that differential housing, but aftermarket may offer more.

Most people that change gearing go at least 2-steps. So, 3.08->3.73. You will need an aftermarket engine/trans tuner as well.

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