The lower, numerically, the gears, the stronger they are. The actual gears have less teeth, especially the pinion, and this allows for a larger pinion, with more material. A set of 4.56's will have a much smaller pinion than your 2.73's. This has always been my deduction anyway. Plus the lower (numerically) gears allow for less stress after the differential, on axle shafts and the like, but more wear and tear before the differential, like driveshafts, and tranny, etc.
Jesse
Ignorance is the first step to knowledge.
Jesse
Ignorance is the first step to knowledge.
