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Old 01-10-2014, 02:52 AM   #1
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Lockers or a Transfer Case gears?

So I'm wanting to put in some lockers on my Jeep wrangler 03 tj. ( sport) It has a dana 30 front and 44 rear, axles are geared to 4.88 and running 35's with 12.50 rims. I use my vehicle as a DD but go down to Moab for a lot of events. My main concern is I don't want to put work into my front axle cause I heard a dana 30 with 35's and being geared wont hold up a locker, but at the same time I've heard the only difference between the Dana 30 and 44 is just the axle shaft. the U joints and everything are the same? But I haven't looked into it much, so some people say a dana 30 deserves more credit and can hold 35's and a locker. So for now I want to just put one in the rear. I'm looking at doing a Detroit locker,or an Aussie, but that's gonna be engaged the whole time?. Also another thing, what would be a better option, lockers or a transfer case gear, do a 4-1 crawl case. I've seen people in my group go up things just fine cause they have a transfer case gear and no lockers. So I guess two questions here, lockers for the rear for a DD. Or just do a transfer case gear 4-1? Thanks for the help! I do live in Utah so we get a lot of snow, so having a locker in the rear would be a little hard to drive with, could use the help.

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Old 01-10-2014, 06:35 AM   #2
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Go with a rear detroit locker. I used detroits in two of my rigs and love them. I plan to replace the TrueTrac in my current rig in favor of a detroit locker. You could also install a set of 27 spline chromoly axle shafts in the D30 when you install a front locker. I run 35s with 4.88s, aussie locker, and stock axle shafts but am upgrading to ten factory shafts next month.

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Old 01-12-2014, 04:30 AM   #3
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I think a locker would get you farther down the trail than a lowered gear t-case.
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Old 01-12-2014, 08:24 AM   #4
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if you really want to beef up the 30 go with a locker and 30 spline chromoly axle shafts
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Old 01-12-2014, 08:58 AM   #5
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Swap out for an HPD30. Imped has run his on 37s for a long time without issues. It really doesn't get the credit it deserves. If you go for a locker put it in the rear.
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Old 01-12-2014, 11:03 AM   #6
Knows a couple things...

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Yes indeed, a Detroit Locker in your rear axle would be an absolutely great upgrade. I ran my rear Detroit Locker for 120k miles before that Jeep got stolen & I loved it. I loved my Detroit Locker, it was a simple, bulletproof, and uber-reliable locker that is the best behaved automatic locker out there. Just take it easy on Utah's icy roads & you'll be fine with it.

I also ran a locked front Dana 30 for 100k miles with 35's. I did finally break a front axle shaft on an extremely/crazy-difficult rock crawling trail (look up "Sledgehammer" in Johnson Valley where that happened) but a simple upgrade to hardened alloy 27 spline shafts was all that axle needed. It was fine after that.

A HP Dana 30 is nice to have in that it raises the front driveshaft up a couple inches but strength-wise, the standard Dana 30 is fine up to the 35" tire size. Though, again, upgrading its 27 spline carbon steel shafts to hardened alloy shafts is recommended if you're doing difficult trails. You'd need to do the same thing with a HP Dana 30 if you ever went that route.
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Old 01-14-2014, 01:34 AM   #7
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I was talking to my neighbor who build's Jeeps for fun, and he was telling me to go with a Transfer case gear over a locker, cause of living in Utah and having a locked locker is just asking for an accident. Unless I do a manual locker It would be better to do a Transfer case gear change. I don't want to put a lot of work into my front 30 cause I fear that I'll break it and waste everything I put into it ( more of just break it a lot) is it worth to just wait and try to put in a 44 or try to build the 30 stronger. My neighbor was telling me to look a lock right for the front, cause I don't drive my jeep in 4high unless the roads are bad, which is a lot, so that's why having the rear locked would be bad he said. I don't want to pay someone either to put in lockers too, just got my axle gears done and that was expensive stuff. Would like the help and input on this! Thanks!!!
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Old 01-14-2014, 01:42 AM   #8
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Hey are you running that Aussie locker in the front or the rear?

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