Invest2m4

4.88 won't cut it with 40s. I have a light 2-door and I went 5.38s and wish I could have gone higher. Also running a 4:1 transfer case. Looks like I will be adding a roots type super charger to get the torque I need at the low end.

I had 4.88s and 37s before. I'd say driving around town, my 5.38s and 40s feel like 4.10 on 37s. 4.88s on 40s would be like 3.21 on 37s. The rotating mass just kills it.

BeachJK

That's why I said maybe, probably wind up somewhere in between 37-40. Yours is the 3.6L right? Might wind up supercharging too, eventually.

Invest2m4

Yeah, 3.6.

Mark Doiron

If you want 4.10 gears, why not just buy someone's used take-offs? Heck, when I regeared mine from 4.10s, I gave the gears (and LSD) away.

numbah1

Not trying to hack but what gear ratio for 40's then? 5.38?

I'm getting 18 mpg highway on 37's & 4.88 gearing. What mpg are you getting on 40's?

Just noticed I quoted the wrong person... d'oh!

BeachJK

No worries. That's good to hear about the gas mileage, hope I get the same.

My 2011 had 5.13 with 37s and got like 13 mpg

Invest2m4

5.38 for sure. You know, I guess I don't know my current MPG. Since my build has been done, I have mostly been off-road. It is north of 15 mpg for sure though. Helps that I have a D60 front and roll with the hubs unlocked. I believe that is good for about an additional 2 mpg right there. I have a small issue with my tank that I have to fix before I can fill it all the way. Once I fix that this weekend, I'll keep track of it when I fill at the pump. Just remind me in a few weeks for an update. Shoot me a PM or something.

Maertz

Im at 9 mpg lol

Invest2m4

But you gots some sick flex, lol.