L.S.D doesn't work Ram 1500

[Ricks Ram]

I have a 2014 1500 4X4 Quad Cab. It has the Anti Spin differential with 3:92 gears.. I made sure when I bought it that it did. It's right in the window sticker. Before anyone chimes in saying that T/C and anti spin are two different things I know. Before the dealer would even listen to me he made me give him my vin number and confirmed that I am supposed to have a limited slip rear axle. It spins both tires all day long as long as you are on pavement just like an open differential does. I was leaving by buddies house in the country the other day and you have to make a hard right to exit the driveway. The drivers side tire is in gravel and the passenger side is loaded because it's on a slight hill. My buddies are all Chevy guys as I was until I bought this truck. I just sat there and spun the drivers side tire. They all laughed there heads off. I bought the truck with posi so I assumed it worked I hadn't had a situation to check.it yet. I was so embarrassed. We did some tests and sure enough when ever one tire was in the grass or the rear end was twisted up a little it will spin one wheel and you just sit there. I called the dealer and he is trying to tell me my differential has to have equal traction on both tires to work properly!!!!! Isn't the whole idea of a limited slip to transfer power to the wheel with traction! I have been building cars and racing my whole life and also been into four wheeling for years and I know the difference between and open differential and a posi unit. I have an apt on Wed with the dealer so we will see what happens. I crawled under the truck and the part number on the rear end seems to be the correct one but I can assure you it doesn't work. If that is Ram's idea of an anti spin differential it sucks!

 

[clh1220]

Your limited slip is no where near as good as the gm g80. That's why I wasn't to woried about not getting it on this truck. My z71 was a much better 4wd then the ram.but I still like the ram better.

 

[drittal]

It relies on a clutch. This allows one side to slip when turning so the inside tire isn't chirping and chattering. Negative side affect is if one side has a lot more traction than the other the clutch will slip and spin the side with less traction. Some of the manufacturers now have electronic locking rear diff to avoid the foiliables of a L.S.D.

 

[Ricks Ram]

I had a Z71 as well and it was a great truck for 16 yrs. Some of my friends and problems breaking there rear ends in there Chevys but I never had any issues with mine. And the posi in my Chevy worked perfectly! I can't wait to hear the B.S. the dealer tries to feed me when I take my truck in. I am hoping that somehow I got an open differential by mistake. I was going to pull the cover and check but I didn't want to touch it until they looked at it.

 

[drittal]

Poor man test. Jack up the rear so both tires are off the ground. Turn one wheel. If the other turns the same direction it's a lsd, if opposite it's open.

Or just jack up one side and try to turn it. If it turns it's open.

 

[Ricks Ram]

It relies on a clutch. This allows one side to slip when turning so the inside tire isn't chirping and chattering. Negative side affect is if one side has a lot more tactics than the other the clutch will slip and spin the side with less traction. Some of the manufacturers now have electronic locking rear diff to avoid the foiliables of a L.S.D.

I understand what you are saying but it's not in anywhere near enough of a bind to not spin a wheel. It acts just like an open diff. If you have the factory anti spin I suggest you go check it on uneven traction and see what happens. I put the passenger side tire in the grass and the other on the pavement and accelerate normally and it spun the tire!!!

 

[Ricks Ram]

Poor man test. Jack up the rear so both tires are off the ground. Turn one wheel. If the other turns the same direction it's a lsd, if opposite it's open.

Or just jack up one side and try to turn it. If it turns it's open.

A lot of differentials will turn opposite when they have posi now. It depends on the style you have. I did check it and it spins backwards but so did my Chevy and it had posi.

 

[drittal]

https://youtu.be/8k-LmnS3ED0

 

[6.7CumminsDrvr]

Sorry to hear man, my LSD works great, wish I could say the same for the tcase!

 

[drittal]

My guess is Ram uses a low breakaway torque value in their LSD for drivability reasons. I wonder is the clutch can be shimmed to increase it?

 

[clh1220]

You don't say what trim level you have. I have the big horn with the auto 4wd, so I didn't worry about not having the lsd. If it's training and I have to take off I'll just hit the auto 4wd button. I dint go off the road anymore except for a farming road during deer season. Oh and as for your buddies ,the hemi eats up the 5.3. The 5.3 never gave me a **** eating grin like this hemi does.

 

[Ricks Ram]

https://youtu.be/8k-LmnS3ED0

That's a pretty cool video. I have heard the the newer 2500 and 3500 dodges have problems with there limited slip but not the 1500 Rams. I was hoping they would test a new 1500 but they didn't. I am going to have them take another new 1500 with LSD and see if it acts like mine. If it is just a crappy system I will change it out for a better aftermarket diff. I haven't used my truck much yet but we do a lot of camping and boating. A limited slip comes in real handy it's kind of a must for me.

 

[tncruiser]

I found that a hard acceleration with t/c on acts kinda squirrely but I know my lsd works and I have a couple of 10 ft tire prints in front of my house
no thing crazy as the truck is only 8 weeks old
brianj

 

[Ricks Ram]

I found that a hard acceleration with t/c on acts kinda squirrely but I know my lsd works and I have a couple of 10 ft tire prints in front of my house
no thing crazy as the truck is only 8 weeks old
brianj

Like I said if I jump on it on the pavement it will leave two black marks until I take my foot out of it. I have seen many open diffs do the same thing. My problem is not having limited slip when I actually need it.

 

[Forcepro]

Drag the brake a little to help transfer the power to the tire with more traction. Used this technique when I was heavy into off-roading (before I got true locking diffs).

 

[clh1220]

Drag the brake a little to help transfer the power to the tire with more traction. Used this technique when I was heavy into off-roading (before I got true locking diffs).

Thats what traction control does.

 

[ram_tech]

to the OP how many miles on your truck and have you done a diff serv yet? some times folks forget to add the bottle of LSD additive with the new diff fluid.

only reason i ask is i got a quote for the lsd carrior and bearings was going to install it in my truck. you post is making me 2nd guess that.

auburn makes one for our axles but that adds the posibility of voiding warranty work in the future for the rear end.

 

[clh1220]

Auburn actually has a warranty to go with there unit. It was around 1000 here installed. My truck with ghee open differential diff great in the show. With traction control and auto 4wd I don't need it.

 

[Ricks Ram]

to the OP how many miles on your truck and have you done a diff serv yet? some times folks forget to add the bottle of LSD additive with the new diff fluid.

only reason i ask is i got a quote for the lsd carrior and bearings was going to install it in my truck. you post is making me 2nd guess that.

auburn makes one for our axles but that adds the posibility of voiding warranty work in the future for the rear end.

The truck has 7700 miles on it. There is no LSD additive tag on the rear end which I thought was strange. I was told that the truck doesn't use a clutch system and then I read they do. Everyone you talk to tells you something different. I could easily tell by pulling the cover but I am not going to touch it until I take it to the dealer. I could tell by talking to the service manager on the phone he was pretty much clueless so it should be fun. I was trying to explain the difference to him. I looked at the Auburn diff as well. If my truck actually has the L.S.D. like it's supposed to and they just suck that bad the Auburn is probably the unit I will put in. I don't know how Ram could get away with calling there diffs a anti spin if this is the way they say they are supposed to work......we will see on Wed.

 

[loveracing1988]

This is truly the way the ram lsd works in both the 1500 and the HD trucks. It is not a locker like the GM trucks use. It sucks but that is what we are stuck with. Someone above said it, they use a very low preload on the clutches so any little indifference in traction and it will light up one tire. Also putting the wheels up in the air and spinning them does nothing, you might feel a little resistance but it will act like an open differential in the air.