Suspension and Chassis Questions about your suspension? Need chassis advice?

Panhard rod and lower control arms

Old Feb 24, 2008 | 09:37 PM
  #1  
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Panhard rod and lower control arms

Question:

Why would anyone need the adjustable panhard rod and lower control arms?

I don't understand what adjusting these parts would do.

I want to put lowering springs on my car, and I think I can just go with the non-adjustable parts.
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Old Feb 24, 2008 | 11:08 PM
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Car: 1987 IROC-Z
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Re: Panhard rod and lower control arms

If you will be lowing the car you need to buy an adjustable panhard bar to center the rear end, and you should also get LCA relocation brackets to bring the angle of the LCA's back to spec.

Not sure why anyone would need adjustable LCA's... this is where someone else can chime in.
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Old Feb 24, 2008 | 11:18 PM
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Re: Panhard rod and lower control arms

If you notice your car dog tracking down the 1/4 mile, then you can adjust the length of your LCA's. If the rear end brackets, or body brackets, or etc is out of whack, you can adjust the LCA's.
For the average user I don't think it's useful.

For a lowered car, the adjustable panhard is a very good idea, as well as the LCARB's.
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Old Mar 12, 2008 | 02:45 PM
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Re: Panhard rod and lower control arms

I just bought my car a couple of months ago and the guy that owned it before me installed Eibach Sportline springs and I have noticed that the car is leaning to the passenger side buy 1" in the front and the rear. Do i need to install an adjustable panhard bar, would that help even the car out at all? I just put new shocks and struts in, new sway bar bushings and sway bar link kits. I dont know what else to do. please help!
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Old Mar 12, 2008 | 03:17 PM
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Re: Panhard rod and lower control arms

If the springs are aftermarket / lower or worn out stock, the car will sit off to one side like that...

Get new springs, the rears are easy to replace...

If it is lowered, get an adjustable Panhard bar to fix the offset of the lowered springs...

Raf
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Old Mar 12, 2008 | 05:55 PM
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Re: Panhard rod and lower control arms

What he said
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Old Mar 28, 2008 | 08:24 AM
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Car: 1983 Pontiac Firebird
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Re: Panhard rod and lower control arms

any preference to which brand? i was thinking UMI because they have the non-adj. LCA's and panhard bar together for $185 and that seems like a good deal being that my car isn't lowered or a strip car and i don't need the adj. ones.
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Old Mar 28, 2008 | 03:51 PM
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Re: Panhard rod and lower control arms

I like UMI
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Old Mar 28, 2008 | 04:21 PM
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Re: Panhard rod and lower control arms



I have all UMI stuff on my car. If you get the double adjustable panhard bar, it makes life much easier.
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Old Mar 28, 2008 | 04:24 PM
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Re: Panhard rod and lower control arms

but do I need the double adj. being that my car isn't lowered? i had just planned on going all non-adj.- didn't think i needed anything more.
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Old Mar 28, 2008 | 04:34 PM
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Transmission: 700R4, TH400
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Re: Panhard rod and lower control arms

punkdude908, no you can just get the non adj ones. I was refering to the original creator of this thread, that you seem to be hijacking.
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Old Mar 28, 2008 | 04:49 PM
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Re: Panhard rod and lower control arms

punkdude908, If you're not on a tight budget you would still benefit from the adjustable versions. Even from the factory the rear end isn't perfectly aligned (angle and side to side). With the adjustables you could get everything perfect, plus if you ever do lower you would only have the right parts.
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Old Mar 28, 2008 | 07:17 PM
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Re: Panhard rod and lower control arms

By buying the adjustable pieces you also get the spherical rod ends that dont bind as much as the solid poly bushings, which bind too much for most racing applications from what I have read.
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Old Mar 28, 2008 | 07:37 PM
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Transmission: 700R4, TH400
Axle/Gears: 4th gen 3.23 posi/LS1 discs, stock
Re: Panhard rod and lower control arms

That's why I bought mine
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Old Mar 28, 2008 | 08:36 PM
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Re: Panhard rod and lower control arms

thanks guys!
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Old Mar 28, 2008 | 09:40 PM
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Re: Panhard rod and lower control arms

How do you know how to adjust the adjustable panhard bar?

I cannot visualize how it is done so the car is adjusted right.
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Old Mar 28, 2008 | 10:14 PM
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Axle/Gears: 4th gen 3.23 posi/LS1 discs, stock
Re: Panhard rod and lower control arms

The panhard bar sits horizontal. By lengthening, or shortening it, you can adjust it so the rear is centered under the car. Basicly, it controls the side to side motion of the rearend.
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Old Mar 28, 2008 | 10:21 PM
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Re: Panhard rod and lower control arms

I understand all that.....I am just trying to visualize how it is adjusted.

Is it when the wheels are hanging when the car is jacked up, or is when the car is on the ground or what?

How do you know when the rear end is aligned right, is what I mean cuz the adjustable panhard rod will not automatically put it all into place like the factory one.
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Old Mar 28, 2008 | 10:31 PM
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Transmission: 700R4, TH400
Axle/Gears: 4th gen 3.23 posi/LS1 discs, stock
Re: Panhard rod and lower control arms

1.The car needs to be on the ground, or a drive on lift.
2. The rod end goes on the axles mount. The rod end is threaded so you can adjust the length of it. On the double adjustable ones, it's adjusted the same way as the tie rods.
3. Hang a string with weights from the rear fenders. Adjust the panhard bar so the when you measure the distance between the tire and the weighted string are the same on the left and right sides. The rear is now centered.

Easy as pie
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Old Mar 29, 2008 | 12:05 AM
  #20  
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Re: Panhard rod and lower control arms

OK, that makes sense.

I've never done this before, and I appreciate your help.
----------
So, the lower control arms, once the relocation brackets are installed (I am lowering my car) are done with the car on the ground, too?

Wait, I don't think it matters because it is just a length issue, to get the LCA's to simply reach the new brackets' holes, right?

Last edited by New2Chevy; Mar 29, 2008 at 12:08 AM. Reason: Automerged Doublepost
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Old Mar 29, 2008 | 08:51 AM
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Transmission: 700R4, TH400
Axle/Gears: 4th gen 3.23 posi/LS1 discs, stock
Re: Panhard rod and lower control arms

Originally Posted by New2Chevy
So, the lower control arms, once the relocation brackets are installed (I am lowering my car) are done with the car on the ground, too?

Wait, I don't think it matters because it is just a length issue, to get the LCA's to simply reach the new brackets' holes, right?
The stock LCAs will work with the relocation brackets. If you do buy adjustable LCAs, set them to stock length. When you get an alignment, they can adjust the rear if necessary.
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Old Mar 29, 2008 | 10:24 AM
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Re: Panhard rod and lower control arms

Oh, ok.

I'll be darned.
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