Bringing this thread alive again and was wondering if anyone running a rubicrawler has 5.38 gears

 

5:13s in mine, 37" MTRs.

 

Ok I am thinking of installing one this winter but I'm running 5.38's with 38 Geolandars

 

I installed one last year when I was running 4.88s with 33s. Loved having the increased crawl ratio. Then I went to 38s and have switched to 5.38s as of last month. I have not wheeled with this current set up yet but have tested it out on some log piles I have in my yard which sit at 3.5 feet high. I can tell you in 4Lo, RubiCrawler engaged and lockers engaged it crawled up it like it wasn't even there. I didnt use any skinny pedal, 30lbs of air in the tires and swaybar connected. So 5.38s are not too steep IMHO.

 

Good to know !!!

 

If you are doing the install. Just set aside about 10 hrs from start to finish. If you are doing it with out a vehicle lift it will take longer.

 

I got all winter!! I park mine to do projects !! Maybe I'll message ya in a few weeks for pointers .

 

Is there a good suggestion on where to purchase one for a good price? Does everything come in the kit to install or is there other things needed?
Since I will be having the front transfer case out is this a good time to do any other upgrades as well? Like front driveshaft or other things related to install

 

I'm contemplating a Rubicrawler as well! Couple questions:

1. With my eventual planned 5.13 gears, my crawl ratio would be approx 158.5:1, is this excessive for an auto? (I've had a manual rig with 117:1 crawl ratio and loved it but, no experience with an ultra low slush box) Do those of y'all that have a Rubicrawler find yourselves utilizing the full low range very often? Or the 2.72:1 low very often? (in lieu of stock 4:1)

2. How tough is the install? (I'd like to be able to put it in myself, if possible)

Thanks!

 

In my humble opinion you should try it. Directions are pretty good. Factory Service manual access helps. Follow the suggestions... I usually break something which extends my projects but amazingly I did not damage anything when attempting this. I included a transmission service and did it all without a lift.

Its very quiet, and super torque when u need it. Shifts just like stock t case into low. Keeps the stock look as well. All in all I love it.