Re: gear ratios. should I go 4.10 or 3.73
Not enough info without knowing your tire size......BUT 4x4, 3/4 ton, and towing tell me your probably running a 265/75 16 like stock or maybe even something like a 33x12.50. If so,......stick with the 4.10. A 3.73 will KILL your towing power.
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