To get back to a stock 3.55 ratio with that size tire, you’re looking at installing a 4.10 or 4.30 gear set. You would need to do both front and rear.

I would go a little steeper just to take some relief off the tranny and add a little more performance. Maybe do a 4.56 or 4.88.

 

I was thinking the 4.56 but just curious what happens if you only do the rear?

 

I was thinking the 4.56 but just curious what happens if you only do the rear?

 

It would be less expensive to go ahead with the front ring and pinion than to replace everything that gets destroyed the first time you attempt to use offset gearing.

 

You can’t use 4wd anymore. In theory, they should be within 1% of each other. Otherwise ****s gonna break. Probably starting with the transfer case.

 

did you ever drive the truck with stock tires? if so, did you like it. If yes, then you need to use a calculator to get back to the stock ratio with the 40's

with 3:55's i'm guessing it only came with 32's

You have double overdrive so you can run some low gears like 4:88-5:13 if you wanted.

You can just do the rear gears for now but DON'T use 4wd until you get the front done. the ony reason I can see for going this route is costs involved to do it all at once