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Old 07-23-2007, 01:06 PM
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79 Trans Am suspension rebuild

I am looking for some tips on rebuilding the suspension in my 79 TA. This fall I intend to repair or replace the major components in the front end(ball joints, springs, tie rod ends etc.) I would like to replace the body to frame bushings on the front sub-frame. They are definitely worn out. What would be the best way to undertake changing these bushings? What special tools, lifts would I need? Should I pull the motor/trans? The car is in good shape and would rather not pull the whole front clip off, but I will if its the best way to make these repairs. Any info that anyone can give me would be greatly appreciated.

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Old 07-23-2007, 09:23 PM
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I did the center & rear bushings on my '72 Nova, which should be pretty close to yours, I believe. My front ones were in good shape, so I left them alone.

First, I hosed the bolts down with used motor oil about a week before I undid them, figuring it would make the job easier. I only had to use an impact wrench on one of them, but the rest came loose by hand. I was told it's best to do one side at a time, so that's how I did it.

I jacked the whole side of the car up (be sure the door's shut before you do this) with a floor jack, with a long piece of 4x4 between the jack and the body. I put jack stands under the wood on both sides of the jack just in case. Removing the mount bolts let the subframe drop down far enough to get what was left of the old bushings out and replace them with the new urethane units. Be sure you remember in what order the bushings and washers, etc., came out. Mine seemed to go back together without any obvious alignment problems, but there are some alignment holes about 5/8" in diameter in the center mounts if you need them.

I used some kind of lube on the bolt threads so they wouldn't tend to rust up too badly, and I just cranked them down real tight. There's a torque spec for them, somewhere over 100lb-ft for the big ones, but my torque wrench was out of commission, so I just eyeballed mine.
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