Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum - View Single Post - Changing out differentials
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Old 06-13-2019, 03:03 AM
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rcott01 rcott01 is offline
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2004 GMC Envoy SLT XL
Black 4.2L I6 4X4
Join Date: Feb 2016
Location: Eaton, OH
Posts: 57
If you're going to swap gears, I would just get a pair of differentials from a junkyard. 3.73s are very common in my area. I recently bought a 05 TB to flip that had a bad rear diff with the 3.42 and was harder to find than the 3.73. I always go to a pull yourself junkyard and the rear was only $100 and they charge $75 for the front.i personally would try that first, that way if it still isn't enough pulling power you don't have much money into it.
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