Locker or posi track - Dodge Cummins Diesel Forum
2013-2018 General Discussion General Chit Chat About the 2013 model year differences 6.7L 4th generation Cummins - NO ADVERTISING - Sponsored by: StarLite Diesel

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post #1 of 56 (permalink) Old 04-11-2019, 07:59 AM Thread Starter
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Locker or posi track

I’m about to regear my truck. My question is should I get a locker or posi rear end? I do off-road some, mostly highway. I don’t tow that much. Down the road I am gonna upgrade the tranny and turbo to high performance. I know some say a locker is very noisy, but I just wanna know the pros and cons and if anyone with a daily driver has a locker. I’m looking at the Yukon gear locker or dura grip and I’m going with the 4.11 gears cause I have 37 inch tires. I hope I explained well enough thanks for all the help.

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post #2 of 56 (permalink) Old 04-11-2019, 08:52 AM
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Honestly unless you're rock crawling on a regular basis where you're getting a rear tire off the ground in my opinion a limited slip in the rear is the best option. Putting a selectable locker like an ARB in the front is going to gain you a lot more traction off road vs. the normal open front end...that's what I did anyway.

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post #3 of 56 (permalink) Old 04-11-2019, 09:14 AM Thread Starter
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Ok thanks, that was what I was thinking. Just wanted to see what people has done. So are you enjoying the locker in the front? Did it make a huge difference
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post #4 of 56 (permalink) Old 04-11-2019, 09:25 AM
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usually a locker in the front is only for slow rock crawling or when you get stuck. It makes steering a nightmare and sketchy unless going real slow. I would also agree with the limited slip in the rear if not rock crawling. I would always go with a selectable locker, when those auto mechanical lockers can scare the liven crap out of you when they lock in on hard pavement going around a sharp turn.
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post #5 of 56 (permalink) Old 04-11-2019, 10:11 AM
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Ok thanks, that was what I was thinking. Just wanted to see what people has done. So are you enjoying the locker in the front? Did it make a huge difference
I haven't had a chance to really test it out yet, just had it thrown in with the gears when I was home on R&R. They made a huge difference on the power wagon I had before...there's really no substitute when looking for off road traction

13' With 6" Thuren lift, Stage 6 King 3.0's front and rear, alien arms, trussed front end, dynatrac ball joints, king steering stabalizer, thuren track and sway bar, boogie bumps, 17" Tail Ready Bead lock wheels w/40" toyos. 4.56's w/front ARB
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post #6 of 56 (permalink) Old 04-11-2019, 12:25 PM Thread Starter
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Ok thanks, that was what I was thinking. Just wanted to see what people has done. So are you enjoying the locker in the front? Did it make a huge difference
I haven't had a chance to really test it out yet, just had it thrown in with the gears when I was home on R&R. They made a huge difference on the power wagon I had before...there's really no substitute when looking for off road traction
Ok thanks for everything. Also your truck looks great.
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post #7 of 56 (permalink) Old 04-11-2019, 12:44 PM
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The problem with a front locker messing up your steering isn't the lockers fault, it's the axles U joints.
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post #8 of 56 (permalink) Old 04-11-2019, 12:50 PM
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The problem with a front locker messing up your steering isn't the lockers fault, it's the axles U joints.
Wrong. The issue is when you try to turn the wheel the front wheels have to spin at a different speed to accomplish that. With it locked they will stay at the same speed and try to stay straight. I have RCV joints in my offroad rig and it is still hard to turn when the front arb is locked so I add hydroassist to mine.
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post #9 of 56 (permalink) Old 04-11-2019, 01:12 PM
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I went with Eaton Elocker electronic locker in the front and Eaton posi limited slip in the rear. I looked at the ARB option,but I wasn't confident with the air switch. But yes,definitely want a quality limited slip in the rear.

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post #10 of 56 (permalink) Old 04-11-2019, 02:29 PM
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Wrong. The issue is when you try to turn the wheel the front wheels have to spin at a different speed to accomplish that. With it locked they will stay at the same speed and try to stay straight. I have RCV joints in my offroad rig and it is still hard to turn when the front arb is locked so I add hydroassist to mine.
Even with that unless going slow its really poor steering since the tires want to spin at different speeds and cannot that means one or both have to be loosing traction causing unpredictable steering. But not an issue if selectable as you can just turn it off.

In the 70's we had the auto lockers and you had to take extra underwear with you, its was scary when the rear would auto lock on the pavement, but really scary when the front would do it off roading. Its one thing to know its locked, its another wondering when it will lock. And our 4x4's only had lap belts for the most part. Those were the days, young and crazy, and no cell phones so when you got stuck, you walked if no other truck was with you.

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post #11 of 56 (permalink) Old 04-11-2019, 03:17 PM
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GM uses the g80 auto locker factory, have been for years. They work great. Road manners aren’t bad either. I wish ram used it. They both use the same rear end on our diesels. I have already had times hunting where I had to use 4x4 to get out of something cause the rear tires wouldn’t lock up. My duramax would lock up fully after one tire would spin a couple revolutions
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post #12 of 56 (permalink) Old 04-11-2019, 03:22 PM
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Even with that unless going slow its really poor steering since the tires want to spin at different speeds and cannot that means one or both have to be loosing traction causing unpredictable steering. But not an issue if selectable as you can just turn it off.

In the 70's we had the auto lockers and you had to take extra underwear with you, its was scary when the rear would auto lock on the pavement, but really scary when the front would do it off roading. Its one thing to know its locked, its another wondering when it will lock. And our 4x4's only had lap belts for the most part. Those were the days, young and crazy, and no cell phones so when you got stuck, you walked if no other truck was with you.
we said the exact same thing. The hard steering has nothing to do with the ujoints or cv joints, it is the wheels are spinning at the same speed. Auto lockers or lunchbox lockers are fine in the rear of any vehicle or front of offroad only vehicles. They do make loud pops from time to time. Ran one in the rear of my jeep for many years before I went ARB. Would never use in the front on a street vehicle just to unpredictable in slick conditions.

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