I am ging to chnage gears in my truck soon, but I am still undecided on what size. The truck came with 3.73 stock. Tire I am running now are 33 x 12.5 x 20. What size would be recomended?? 3.90, 4.10, 4.56?

 

4.10 -- I'm suprised your Z71 didnt come with 4.10 gear, most do from the factory.

 

Im not telling you what to do but unless you want to go to 4.56 I wouldnt wasts the money unless you have plans on putting in a Posi and you will already be in there. The reason I changed is because I had 3.42's. Are you wanting to do a Posi?

 

My truck already has a posi in it. The only reason i would think a 4.10, is if in the future I might decide to lower the truck and put smaller tires on it, mpg would be hurt as bad.

 

Id get 4.10s, thats what mine will be running soon with my 33s

 

i say 410's i just put mine in and wow

 

it would be nice if there were a 4.30 option. overall i'd say go with the 4.10's. 4.56's would be nice, but that makes the pinion a bit smaller and isn't very highway friendly.

 

A 4.10 would be good. If you ever planned on going bigger with your tires then you should consider a 4.56. My Z71 has the 3.73's which I chose for fuel savings, that is probably minimal. The 4.10's were a no cost option, but with stock height tires I am pretty happy with my 3.73's.

 

I would have to agree with the 4.10 myself. I am hoping tomorrow will be the day I finally get mine in. I have been looking at them for months on the floor now. My truck has 3.42's so I hope it will make a pretty good difference, from what I have read it will.

 

Here a while back I saw some 4.10 for sale on here. Does anybody have some?