Do my differentials have to be the exact same when regearing?

Asked by Jan 30, 2016 at 02:18 AM about the 1998 Dodge Ram 1500 2 Dr ST 4WD Standard Cab LB

Question type: General

I wanna gear my dodge ram 1500 to run 40s and
wanted to know if I had to have the same gearing
in both diffs? Or if one is lower then the other?

3 Answers

71,415

You have to have the same gear ratio in the front as in the rear for a 4-wheel drive.

Thank you!

65,745

The same size tires front and back too.

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