Diff locker?

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Diff locker?

Postby macdaddy » Sun Nov 24, 2013 1:54 pm

Ford tells me that I have a locker on the rear axle of my F250. Is this a true diff locker? Or is this another upgrade that I will have to make? Got to put one in the front eventually; rear too?
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Re: Diff locker?

Postby 2500hdon37s » Sun Nov 24, 2013 1:58 pm

most likely a limited slip. only trucks that I know that have a real diff lock are Hummer H2's and some toyota's as an option. every other truck either has some sort of limited slip or an open diff.

and personally a limited slip is fine most of the time if it works correctly.
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Re: Diff locker?

Postby Windrider » Sun Nov 24, 2013 9:01 pm

Probably limited slip. Limited slips are fine unless you lift a tire off the ground.

True lockers are a bit hard on the drive train. A limited slips gives a bit of cushion.

Other than the Power Wagon, I'm not aware of any full lockers in 3/4 & 1 ton trucks.
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Re: Diff locker?

Postby 2500hdon37s » Mon Nov 25, 2013 3:50 pm

Windrider wrote:Probably limited slip. Limited slips are fine unless you lift a tire off the ground.

True lockers are a bit hard on the drive train. A limited slips gives a bit of cushion.

Other than the Power Wagon, I'm not aware of any full lockers in 3/4 & 1 ton trucks.

not only hard on the drive train, but tires too, a full spool or locked rearend will chirp the tires around a corner unless its a "lunch box" or ratchet type locker.
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Re: Diff locker?

Postby macdaddy » Mon Nov 25, 2013 5:25 pm

2500hdon37s wrote:
Windrider wrote:Probably limited slip. Limited slips are fine unless you lift a tire off the ground.

True lockers are a bit hard on the drive train. A limited slips gives a bit of cushion.

Other than the Power Wagon, I'm not aware of any full lockers in 3/4 & 1 ton trucks.

not only hard on the drive train, but tires too, a full spool or locked rearend will chirp the tires around a corner unless its a "lunch box" or ratchet type locker.


Whose lockers are the ratchet type?
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Re: Diff locker?

Postby ajmorell » Tue Nov 26, 2013 9:06 am

Detroit lockers are ratcheting type as are most lunchbox lockers. My truck has an e-locker and I know that it's an option ford made available at least on f150s. Pretty sure that Toyota has it as an available option also
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Re: Diff locker?

Postby 2500hdon37s » Tue Nov 26, 2013 8:03 pm

Detroit tru-trac units use helical gears instead of a ratchet type system so they are a lot quieter than a ratchet type when cornering. Around here a few people that have messed with their diffs. have them and love them. I'll be installing one soon to be paired with my 4.88's :yes:
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Re: Diff locker?

Postby ajmorell » Tue Nov 26, 2013 8:26 pm

2500hdon37s wrote:Detroit tru-trac units use helical gears instead of a ratchet type system so they are a lot quieter than a ratchet type when cornering. Around here a few people that have messed with their diffs. have them and love them. I'll be installing one soon to be paired with my 4.88's :yes:

Detroit lockers and tru tracs aren't the same thing. The tru trac won't fully lock up like the standard Detroit will, both are quite manageable and quiet on the street
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Re: Diff locker?

Postby Windrider » Thu Nov 28, 2013 5:12 pm

I've got true tracks in both ends of both jeeps. Mud is the problem when I'm hunting.

Detroit true tracks are very well mannered on the street.

Detroit lockers have never struck me as all that well mannered. I'd rather have an ARB or an E-locker if I was going to go fully locked. That way I could control when the locking occurred.
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Re: Diff locker?

Postby ajmorell » Fri Nov 29, 2013 9:24 am

Windrider wrote:I've got true tracks in both ends of both jeeps. Mud is the problem when I'm hunting.

Detroit true tracks are very well mannered on the street.

Detroit lockers have never struck me as all that well mannered. I'd rather have an ARB or an E-locker if I was going to go fully locked. That way I could control when the locking occurred.

It's all about throttle control although I admit that short wheelbase vehicles like jeeps can get squirrelly quick. I agree that a selectable is better but they are almost always more expensive too
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Re: Diff locker?

Postby wetgoldenretriever » Fri Nov 29, 2013 9:27 pm

Welded haha


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Re: Diff locker?

Postby handyandy » Tue Dec 03, 2013 10:29 am

I have a lockrite which works like a detroit locker. It works great and pretty cheap. I hardly notice the clicking noise unless I'm lisening for it when I go around a turn and it disengages. I'd imagine the op's ford is a limited slip which is good on the street and better than a open diff but on a icy ramp or something slick like that it will dissappoint more than likely. If you have the money the selectable lockers like e lockers and arb air lockers are the best just expensive.
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Re: Diff locker?

Postby 2500hdon37s » Fri Jan 03, 2014 5:04 pm

handyandy wrote:I have a lockrite which works like a detroit locker. It works great and pretty cheap. I hardly notice the clicking noise unless I'm lisening for it when I go around a turn and it disengages. I'd imagine the op's ford is a limited slip which is good on the street and better than a open diff but on a icy ramp or something slick like that it will dissappoint more than likely. If you have the money the selectable lockers like e lockers and arb air lockers are the best just expensive.

air lockers are a real pain and not worth the cost unless you already have an on board air compressor and tank.

Wish I had on board air, then I would get an air locker. Lock it when needed for traction and fun, then unlocked for normal daily driving. I'm planning on a tru-trac after new wheels and tires.
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Re: Diff locker?

Postby mudpack » Wed Jan 29, 2014 9:49 am

macdaddy wrote:Ford tells me that I have a locker on the rear axle of my F250. Is this a true diff locker?

Probably not a true locker, but a limited slip. If the limited slip unit is working correctly, it will serve you well...even if one wheel is in the air. I have limited slips on both ends of my Jeep (Vari-Locs) and I can jack one wheel off the ground and the one wheel on the ground gets enough power to drive right off the jack.

As far as replacing the open diff on the front of your Ford, you will only gain about 25% increased traction over what you have now(open front, limited slip rear). Is it worth the money?


wetgoldenretriever wrote:Welded haha
That is such a bad idea that it shouldn't even have been mentioned.....even as a joke. :no:
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Re: Diff locker?

Postby threedogs » Fri Oct 31, 2014 10:41 am

25 percent is a lot! That's a free duck for every three you shoot . Besides that if you're in the boonies a lot it could pay for itself in rescue fees.
When I bought my 2014 f150 eco I insisted on an e locker and I wish one would have been available for the front .
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Re: Diff locker?

Postby QuackerSmacker498 » Wed Jan 28, 2015 12:20 am

Detroit lockers or any locking device suck on slick road ways (wet or frozen). Limited or open is so much more manigable for most drivers on the road.

On the other hand nothing even comes close to being all locked up front and back off road in nasty conditions.

I own both and on different rigs. Lockers are not for daily drivers, unless you have lots of extra cash to spend on tires and drive train parts. They are noisy and you can forget about acceleration until you have straightened up out of a turn or you will spin out on wet or slick surfaces.

Think about your driving habits long before you spend 800-1000 bucks per axle. 50% + off road = locker, 30% + off road= limited slip, 10% off road= leave it stock, less than 10% off road= sell and buy a Prius! :welcome:

Or buy two rigs and build one for strictly off road and have your daily driver. Its less expensive to do this rather than trying to build a sweet off road daily driver and keep up with constant maintance and repairs.

Take it for what its worth. Just my experience, and I have owned all of the big three GM, Ford, and Dodge over the past 30 years. So don't tell me one is better than next, they all have pro's and con's. Its hard to beat a 4x4 with 33" all terrain or mud terrains with limited slip front and rear for the average american.
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Re: Diff locker?

Postby Dusky Destroyer » Fri Jan 30, 2015 10:50 pm

mudpack wrote:
macdaddy wrote:Ford tells me that I have a locker on the rear axle of my F250. Is this a true diff locker?

Probably not a true locker, but a limited slip. If the limited slip unit is working correctly, it will serve you well...even if one wheel is in the air. I have limited slips on both ends of my Jeep (Vari-Locs) and I can jack one wheel off the ground and the one wheel on the ground gets enough power to drive right off the jack.

As far as replacing the open diff on the front of your Ford, you will only gain about 25% increased traction over what you have now(open front, limited slip rear). Is it worth the money?


wetgoldenretriever wrote:Welded haha
That is such a bad idea that it shouldn't even have been mentioned.....even as a joke. :no:


I've had a bunch of vehicles welded diffs.
I had a 1974 k20 on tons and 42s,
A first gen toyota pickup
A jeep Cherokee
A c10 with a 450 hp small block
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