So I am finally pulling the trigger this week and purchasing a new set of gears, I think I have settled on 4.56 ratio gears for a balance between offroad/daily driving on 35in tires. What else do I need to plan on ordering to do the job? Install kits or master overhaul kits (with bearings)? Anything else to make the job easier?
running manual transmission with just over 51,000 miles.
This is just me trying to spend other people money but since you will have the diff torn apart maybe a good time to do lockers? Also, from what i read 488s is the way to go with 35’s. Should you do the whole thing, as in seals and stuff, I do not think so, but again this is all my opinion.
I would love to do that but I won’t have the funds available to do so. All the spare cash is going into the house currently. Looking at the gear charts, specifically this one:
Both the 4.56 and 4.88 are viable options to keep a balanced ratio. I may end up in the 4.88’s.
The 4.56’s put you back to stock and the 4.88’s offer marginal improvement.
Denise & Walter are running 5.38’s in their manual JK rolling on 35’s and they regularly drive down to PA.
If you want to have a little better low rang off road id go 4:88.you wont even notice it on road
You will need to have a programmer so the Jeep does not go into limp mode with the new R&P but you likely already know that. 
I also recommend the lube locker gasket for the diff cover, beats the heck out of the mess you get with RTV…
In my TJ I run 4:88s with 35s and I’m happy with them.
Also what are you running for gears now? If its 3.73 or below you need a new carrier if Im not mistaken…
Yup programmer will be part of the order as well. Good call on the seal. Not sure on the carrier. Can anyone confirm?
JK D44’s do not have a carrier break.
The D30 carrier break is 3.54/3.73. If you currently have 3.73 gears then you are all set.
I’ll say it again. 4.56 will be spending alot of money for no gain. For that matter, once you take into account the increased inertia and rolling resistance of the larger tires (which those charts do not) then you find yourself slightly worse off than stock.
BTW, Mike Trowha was not all that happy with the lube locker on his JK. I forget the details.
but the chart says its ok 
Been using Permatex RTV Ultra black for years. My brother swears by it and he’s been doing trannys and gears for 40+ years.
Clean, clean, clean the Diff cover and Diff mating surface. Don’t leave any crap on the surfaces.
Bead the cover and encircle the bolt holes
Set it, Tighten bolts only finger tight - just until the bead starts to ooze out a bit and stop. Let it sit for at least an hour or so.
Go have a beer (or two.) Unless you have other stuff to do on the Jeep, then go do that after the beer.
Torque the cover.
I always wait till the next day to add the gear oil, gives the silicone time to fully cure (But that’s just me)
Haven’t had one leak yet! (Knock wood)
Brandon if you email jeep with your VIN they will send you a build sheet of your jeep. This is how i found out i have 410s because my jeep came with the tow package.
Used Permatex Ultra Black for all diff seals at the dealership. after 2 hours you can place gear lube back in no problem. Just make sure you do EXACTLY as Brian says for process. You need to wait for it to set or you will blow the seal once you drop gear lube in it.
Yes, it works for 1998 and greater, Pulled my build sheet off the site in a second. When you load that page in the left hand section, under the title “Your Vehicle”. Click “Equipment list” it will ask for your VIN and push a PDF file for your VIN to your computer to DL. I know I have 3.55 gearing on the rear due to this process.
Ok on Carrier. alright you convinced me on the larger gears…
Thanks for the info. maybe I will stick to the tried and true method…
Yeah I did that last year some time, Confirmed the 3.73 gears.
Denise and Walter have 5.13’s not 5.38’s
I use RTV on every rear end we open and never have a problem with leakage even when filling the rear right away, don’t always have time to wait. Never a problem.
try 4wheelonline.com for pricing. that is where I found the best prices for G2 gears and install kits. I could be difficult to find G2 stuff on their site, but its there
x2, id just until you do so, it just makes more sense
i’ve heard Motive gears are some of the best. thats what i went with when i did mine.
I went with Yukon front and rear - well made, very quite gears. Sometimes the cheaper gears tend to be noisy because the machining tolerances just aren’t there.