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Beefing up the truck suspension
I have a 2008 2500 HD Duramax GMC Sierra 4x4, regular box, crewcab, I have LT 265/70/17 tires (same as one ton) and the GRAWR is the same as the one ton. I would like to safely carry more weight in the truck box while pulling our 5th wheel. I have Firestone Airbags to level out the truck, but I know the airbags don't increase the suspension. I'm thinking of adding an extra leafspring (possibly Timbrens), but I`m wondering how much additional weight can I safely carry by adding the additional springs (leafsprings = how much additional weight?). Anyone have experience with adding additional leafsprings in order to carry more weight.
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DPAM
2017 GMC Denali diesel, crewcab, 4x4, regular box.
2010 Montana 3150RL- Moving to Montana Package , Hickory Edition Package, wet bolts
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