Sounds like your new South Bend to me. Mine does it too. It's actually the clutch "chattering" The only way to stop it is to use a smoother engaging clutch.

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I have heard some talk that trac bars would fix the problem. The guy that put it in was watching me back up and said that the axle is twisting really bad. So maybe stiffer springs or trac bars. Want to get a few more opinions before i make a decision.

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I have ladder bars and it still chatters. They will help the wrap but they won't help the clutch chatter..

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Not sure if i have any clutch chatter almost for sure its axle wrap. It is very violent. So we called down to SBC and they said put a add a leaf in the rear pack and will help. Not sure

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What clutch are you using?

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Not sure what one exactly does ceramic sound correct? I will ask my buddy who put it in and let you know.

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It's not really important. I know what youre talking about though, especially when you back up. It's your clutch that causes all that jumping when you take off. Wait until you back up with a load on. It really gets fun then! Lol.

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I already know! I use my truck every day for work and tow a big enclosed trailer around loaded with gear. Sometimes i have to put the truck in 4L so i can back it up. That helps alot. Or once you get going and can let the clutch out all the way its fine but when you have to go slow and feather it, look out, it sounds like the rearend is coming out.

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GDP bars helped me significantly but didn't eliminate clutch chatter/axle wrap.

The harsh engagement of the ceramic clutch makes everything rock. The motor and rear axle rock violently when dropping a ceramic clutch.

Initially, I had no traction bars with this clutch and it was a bear to drive. Now with the GDP bars I can either leave from idle for slow starts or slip to 1500 for quick launches with no bucking. Letting out quickly between idle and 1400 rpms results in various amounts of axle/engine wrap.

When my clutch burns up I'll probably go with an organic triple instead of ceramic double for the next go around. It gets frustrating to drive smoothly with passengers. When I'm by myself I could care less.

 

clutch chatter and axle wrap are two totally different problems with totally different causes.your first job is to figure out which affliction you have before you can try to remedy either.

 

1 more vote for a grabbing clutch. That is the cause.

The clutch is grabbing and throwing short bursts of torque down the line causing the springs to wrap. Traction bars will reduce the axle wrap and increase the shaking that you feel. The traction bars will attempt to keep the springs from twisting during the torque surge so the next weakest area is the tires. If you got grip you got movement.

Starting out in 1st (sucks when empty) versus 2nd gear will reduce the chatter AND wrap because the flywheel and trans spend less time at different speeds; that is why low range works for reducing the problem.

 

Ceramic clutch!

 

Its your dual disk clutch.

I had the same problem.... correction: I have the same problem.
Backing up the driveway is a real procedure. Slipping the clutch is useless as the whole truck hops and bounces all over. Drivetrain clanging and banging until I push the clutch in.

Just get used to not slipping the clutch. Using low range helps a lot.

 

^^ What he said. Although my GDP Ladder bars did help. And didn't sacrifice a nice ride for them. :thumbsup:

 

We were told that adding a stiffer spring in the rear would also help. Do you have a picture of your ladder bars on the truck?

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No I don't. I could get one after work tonight. In my mind, you would still get wrap with stiffer springs. Plus it would probably ride like chit. Glaciers's bars may be a bit on the pricey side, but they are well built and they take about an hour to bolt on. Real simple.

 

The gain of the reduced wrap from the stiffer spring will be negated by how much you then hate the way it rides. Ladder bars and motor mounts...

 

The "grabby" clutch is causing the axle wrap....GDP is the only way to go IMO. Stops that & completely changes the feel of the truck. I love mine :thumbsup: