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Car Forum / Chevrolet / Chevrolet Trucks / February 2006

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How to adjust the torsion bars

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jeff.standlee@gmail.com - 30 Jan 2006 03:31 GMT
I would like to know how to adjust the torsion bars on my 2001 1500HD
Silverado 4x4. All I would like to do is adjust them enough so that I
can run BFG A/T tires in a P285/75R/16. I am currently running
P265/75R/16 on it now and they barely clear the fender on the front.
Some times they do hit when I am turning and hit a bump.

Thanks
Jeff
Steve W. - 30 Jan 2006 04:04 GMT
> I would like to know how to adjust the torsion bars on my 2001 1500HD
> Silverado 4x4. All I would like to do is adjust them enough so that I
[quoted text clipped - 4 lines]
> Thanks
> Jeff

If a 265 is hitting during turns the 285s will hit even harder. Jacking
the nose with the torsion bars is a REALLY bad idea since they only have
about 1" of adjustment anyway and that is just to adjust the ride height
into the correct range. If you do crank them up expect to need an
alignment and increased wear on the front CV joints. If you want to do
it right get a lift kit that will drop the front diff and correct the
drive angles. Good luck whatever you decide.

Steve W.
George - 30 Jan 2006 16:34 GMT
> I would like to know how to adjust the torsion bars on my 2001 1500HD
> Silverado 4x4. All I would like to do is adjust them enough so that I
[quoted text clipped - 4 lines]
> Thanks
> Jeff

I think you should check for mechanical troubles first.  Mine is a 99, so
its basically the same truck.  The 265's are a size that belongs on that
truck and shouldn't hit.  I've had 305/70's on mine and they didn't rub.
snay - 09 Feb 2006 00:12 GMT
Follow the torsion bar back.  You will come to the adjustment bolts.  Jack
up the front of the truck a bit, thereby reducing the weight on the
torsions.  Now tighten up the bolts a couple of times.  If its not up
enough tighten it a bit more.  Take measurements in the biginning.  Use
your imagination where to take the measurements from.  You shouldnt lift
the truck anymore than 1" to 1.5".  Anymore than that and your front end
is going to ware out to quickly.
TheSnoMan - 09 Feb 2006 02:27 GMT
> Follow the torsion bar back.  You will come to the adjustment bolts.  Jack
> up the front of the truck a bit, thereby reducing the weight on the
[quoted text clipped - 3 lines]
> the truck anymore than 1" to 1.5".  Anymore than that and your front end
> is going to ware out to quickly.

In theory you are supposed to unload the t-bars with a tool before you
adjust them but at very least raise front end to suspension stop. Also,
I recommend you lube the threads on bolt before you adjust them because
they can rust with age if not lubed and strip out threads when you
adjust them.

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