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Old 02-24-2004, 09:44 PM
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upper control arms switched?

I bought a complete polygraphite front end rebuild kit from Classic Performance for my 69 El Camino.

Well, I had a guy help me because I never tackled a front end job before. I took it to the alignment shop and they said they can't align it because the computer can't take an accurate reading. Something is really wrong with it now because when I turn the wheels, they turn like a tractor, kind of laying down.

My question is do you think he switched the upper control arms? Because the arms are sweeping towards the back of the car now. The way the ball joints are so out of whack, it looks like they should sweep forward. What do you guys think?

Thank you.

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Old 02-25-2004, 08:59 AM
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There are a few guys here with Chevelles and El Camino's. Maybe they could post a picture of their suspensions?...
Mark
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Old 02-25-2004, 04:58 PM
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Control arm switch?

Good goodness....I just spent some time there....
I took some control arms to the machine shop and I just had them marked with tape....dumb me...I should have dinked them with a center punch like I usually do.....I just had tape on them.
Anyhoo...when the new control arm bushings were pressed in the tape and my left/right orientation disappeared....
Back at the shop I looked at them, scratched my head, measured them, poked, prodded, whined, cried.....ah the heck with it. I though if they are that close to the same I'll just try to install them. I couldn't get the upper ball joint stud to pass through the spindle. The ball joint stud couldn't get the correct angle to enter smoothly. I looked at the area where the ball joint would be and I noticed the mount was angled. I had to switch the A-arms side to side from where I had them. This is a big Pontiac as well (both GM). I can look at my Chevelle or Monte to see if I can notice a difference. Maybe I can take a picture too. On your Elky either the upper A-arms are the same or they shouldn't be able to be switched.....
Take a look and let me know!
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Old 02-25-2004, 05:06 PM
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Thanks Sandflea, they can switch from side to side but that causes them sweep backwards or sweep forwards depending on if they are correct or backwards.

Right now the upper control arms are sweeping towards the back of the car and I have had some people say that is correct and some people say it isn't.

I really don't think it is correct because of the rubber bump stop under the arm not lining up with the area it is supposed to to hit Also the ball joints are layed way back at an angle.

I am taking it back to the guy's house that helped me out on friday to try to figure this thing out. I was just hoping to have some rock solid information so when I go there nothing gets messed up again.

Thanks a lo.
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Old 02-25-2004, 09:14 PM
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Here is a picture from the drivers side of a 69 Chevelle looking through the wheel well....
Does is look like that...??
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Old 02-25-2004, 10:13 PM
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Quote:
Originally posted by Sandflea427SS
Here is a picture from the drivers side of a 69 Chevelle looking through the wheel well....
Does is look like that...??

Which way is the front of the car???

I can't tell if those a arms are swept forward or backward. Here is a pick of what I have..........by the way, that is the passenger side of the car. The front of the car is the left of the picture.
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Old 02-25-2004, 11:18 PM
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With the upper control arm like you have them, it should look like a road grader turning.

They should angle slightly to the front. You need to switch sides with them. Good Luck

Troy
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Old 02-26-2004, 11:09 PM
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the "wiggle" is the key ....... the "parts car" picture shows this "wiggle" in the arm cutout should be "facing" towards the back !~!~!~!~!



seeeeee....... overanalyzing stuff CAN be helpfull (mike!)
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Old 02-26-2004, 11:32 PM
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Wiggle??
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Old 02-27-2004, 02:00 AM
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ok ... so it made sense when i said it before ... but oddly, now that im drunk i wonmder why i said it that way .... hmmm ...

i highlighted the curved section w/ the lip that im talking about this time, and i circled the "wiggle" ..... where the curved cut actualy straightenes out some ....... this its the section i mean ...

if you swap your upper arms side to side, this "flat" will wind up more towards the back of the car,(matching the orientation in sandfleas pic) and i can gaurentee it will fix your problem

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Old 02-27-2004, 05:07 AM
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Here are some pretty decent overhead photos under the hood of a 69 Chevelle. Looks like yours are reversed.

http://chevelle.www7.50megs.com/engine.htm

Eric
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Old 02-27-2004, 06:23 PM
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Good news!!!!!


I had the guy switch the control arms and SURE ENOUGH, fixed the problem. No more turning like a tractor, lol.


Thanks for all the help guys, mucho appreciated.
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Old 05-11-2006, 05:48 PM
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I don't know why this came up in a resent search of mine..
But, lowroller said wiggle....hee... that makes me laugh...
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