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Old 08-10-2011, 11:38 PM   #3
Alaskan SS
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Join Date: Feb 2011
Location: Anchorage, AK
Posts: 24
Re: 07 GMC Sierra Towing Question

Quote:
Originally Posted by LEEVON View Post
Re-gear to 3.73 or 4.10 and get a tune. $500 gears, $300 tune and you're not only increasing your capacity but driveability. You can also go to 3.90 but it's not a GM ratio, rather aftermarket. The only difference between your 5400lbs capacity and the next higher given all the other variables are the same is gearing.
Thanks, Leevon. So, as I'm not a real 'gearhead', but I can do some relatively simple tasks around my truck, a re-gear involves opening up the rear diff and switching out the gears? Would anything else need to be done, such as calibrating the speedo?
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