So I'm buying my fourth Jeep and one of the Jeeps I'm looking at is fully built with all the extras I want( 35's, 4 " lift..... The only thing it doesn't have is 373 or 410 gears. It currently has 321's. I'm also looking to buy a new one minus all the upgrades but having 373 gears. My question is if I bought the used Jeep how much roughly would it cost to switch the gears to 373 and if so Should I go thru Jeep for it.

 

Not worth the cost to go from 3:21 to 3:73 but gear swaps can be anywhere from about 1000.00 to 1800.00 depending where you are and what you want.

 

How many miles, what year, what are your plans for it, and whats your location?

 

I regeared from 3.21 to 4.56 for my 35's and it cost 1100 in labor, 250 for overhaul kits, I went with a used carrier up front for $40 because I don't think it will fit anything bigger than 3.21, plus my gears which I got a real good deal on. All in all I was around 2 grand in parts and labor, If you only plan on moving up to 3.73 I don't see it being worth the money, but that's my opinion.


Edit: I'm in socal too so labor rates are different everywhere obviously, this is just what I paid.

 

I live in Florida so it's pretty flat. I go off roading but nothing crazy just trail riding and some smaller climbing. I'm worried it will be a dog with the smaller gears. Don't want to loose sixth gear on highway. It's a 2013 unlimited sport with 35's, 5 17" XD rims, 4" Tera flex lift, brand new front Warn bumper with winch and lights, upgraded side steps, rear tire carrier with lights, and upgrade sound, 32K miles and asking 33,460. What do you think?

 

I know in phoenix where i live the lower the mileage for some reason is cheaper. I would go to 4.88s and most of the time its around 1200 to regear.

 

Anywhere from $1000 (a few shops in Texas, California, Colorado) to $3000 (east coast, upper northwest), it depends on location. If you are in Florida, it doesn't matter what someone pays in Texas or California or New York, you need to compare the rates at all of your local shops. Get reviews on your local shops also, don't just automatically go for the lowest price. And be sure they add in the cost of a new open carrier for that front d30.

 

If you don't want to lose 6th gear on the highway you need to stay away from 3:73 gears too. I'd upgrade either to 4:56 or 4:88 with 35's. Actually if it were me I'd just do 5:13 for more grunt.

 

But do you lose mileage with 5.13's as opposed to 4.56 or 4.88's?

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With a 2013 manual and 35's I'd stay away from 4.88 or above. 4.10 or 4.56 will be more than enough gear for your needs.