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Iraqvet05's avatar
Iraqvet05
Explorer
Apr 07, 2017

Newer Chevy 2500HD rear diff ratios and engine differences?

The DW is letting me step up to a new truck to replace my aging 2001 2500HD. I know the newer 2500HD now have 6 speed transmissions but does the differential ratios matter that much with the new ...
Tow Vehicles
KD4UPL's avatar
KD4UPL
Explorer
Apr 08, 2017
The only choices with a GM gas will be 4.10 and 3.73; 4.10 is what you want. A 3500 will have an 11.5" rear axle, a 2500 gas will only have a 10.5" rear axle. Also, the 3500 will have wider wheels, larger tires that carry more weight, and a stronger rear spring pack.

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