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Lowering a GMC 2500HD 4x4


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I have a new 2500HD 4x4 ordered. I tow a lightweight 5th wheel with it so would like it to set a little lower. Also, it is easier to get in and out of a truck that sets lower. So, I have a set of lowering shackles ordered (the GM dealer told me that won't void my warranty as I only am lowering the rear by about 2"). They told me that once those are installed, I can decide two things - do I need to install pinion shims, and does the front need to be dropped by 1/2" to 1" by simply uncranking the torsion bars and realigning.

 

My question is:

 

Are there any negatives to uncranking the torsion bars to lower the front end a small amount such as 1/2"-1"?

 

My email address is:

 

[email protected]

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I would think that it is basically the same as raising it that amount. It's not that much either, so I don't think it will change your cv angles too bad either. I doubt you will see anything negative come from a 1/2" to 1" drop from the t-bars. The ride will probably get slightly softer, which may be a good thing since they are pretty stiff from the factory. If it gets too soft you could always put some adjustable shocks up front and find a setting that you like. Also, I don't think you would really need an alignment after 1/2", but it's still not a bad idea.

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