rockn the 8

 

I cant find 3.92 gears. where do i get them

 

You are going to want to jump to 4.10s. The jump from 3.55s to 3.92s isnt going to be worth the money IMO. Going from 3.55s to 3.92s you are only turning the drive shaft 1/3 more where as the 4.10s you get 1/2 turn and the cost is relatively the same.

 

I have a 4x2 I may be interested in doing this to. I assume that yours is a 2wd and you only had to do the rear?

What did you do about the speedometer and odometer readings? Can dodge straighten that out?

 

I still dont think anyone has successfully got 4.10s installed in a 4x4. There was a member who was supposed to be getting them installed, but I never saw any feedback at all.

The problem is finding the gears for the front end. You should be able to get 4.56s .... and that will probably make your truck a beast. I doubt it would give you +2 on the mileage side .... it may give you -2 off your mileage on the highway.

 

I would get 4.10s but i dont want to do all that work to get it to work for my front diff

 

Just do the rear and forget about 4x4

jk

 

I know with the second gen dakotas, that a gear swap doesn't effect your speedometer and odometer reading, but what about these third gens? Who knows the answer?

 

Monkey, on my superchips Im allowed to change the tire height and the gear ratio, so I would assume a gear swap would change your speed. The speed sensor is on the drive shaft if I remember correctly, so anything after that needs to be accounted for if changed. Nothing the dealer shouldnt be able to fix for you. All they have to do is change the gear ratio in the program and flash the truck with the new adjustment.

 

dealer can change adjust it no problem...for a nominal fee of coarse.