Need gears...

[Arctic-Rodz]

I bought this 98 Yukon a couple of weeks ago, i can hear the gear hum already. Aside that the previous owner put 305/70R16 tires on the stock wheels, yesterday I upgraded those crappy tires n wheels to 295/70R17 Nitto Trail Grappler M/T on 17" eagle wheels (will post pics up soon).

Im not really sure what the stock gear ratio is on this, but I wanna go to 4.10's, i think this will help with the 33" tires as well as help MPG

The deal now is, that I called Summit Racing to look for 4.10's and they asked if my front differential is "reverse rotation" I have no idea... Can anyone help me how to identify is it is or not?

Thanks and sorry for the long story

 

[Arctic-Rodz]

no one knows?

 

[newmarketeod]

reverse rotation is actually the improper term for the style of gears that are in a high-pinion style front axle...and if they are asking you that I would be careful because with your truck it should be a question they need to ask

 

[Arctic-Rodz]

so how should i go about getting the gears i need for the front axle??