Thread: GMC Build
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Old 10-26-2012, 04:20 PM   #23
underpowered
They call me......Scuba
 
Join Date: Sep 2010
Location: Burlington, KY
Posts: 292
I know that style truck, with factory IFS, you can clear 315/75-16's ( about a 35x12.5) with only aftermarket torsion bar keys and minor trimming. the keys are good for about 3" of lift give or take. So with 4", and liberal trimming i think 37-38's are doable.
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