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Old 12-28-2012, 06:50 AM
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c4 rear suspensions

I'm new here I'm installing a c4 suspension in my 39 Packard coupe I'm looking for the angle to install the trailing arms at i set it up so tie rods were level.

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Old 12-28-2012, 07:05 AM
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search time

some one had a lot of pict of their vette swap. try google.
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Old 12-28-2012, 07:11 AM
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I saw some place that somebody said about 30% downward but i don't understand what they ment by that thanks for the reply
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Old 01-01-2013, 08:47 PM
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According to what I came up with in some of my old installation notes, the rear lower trailing arm is supposed to be 3 degrees down toward the front at ride height. While I believe that is true for a stock setup, in my latest install I raised the frame side of the trailing arm mount so that the lower rear trailing arm is about 3 degrees up toward the front in an effort to reduce some acceleration squat in the rear suspension. The results of the change are inconclusive as I haven't finished dialing in the rear suspension just yet. Not sure where the 30 degrees comes in that you read about, but it could be refering to the angle of the upper trailing arm link at ride height.

Andy
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Old 01-03-2013, 07:39 PM
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Thanks for the info
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Old 03-07-2013, 04:13 AM
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Originally Posted by 39 Packard View Post
Thanks for the info
were are you located ? I have a jig made up to set up c4 rears
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Old 03-07-2013, 08:44 AM
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Im in Wisconsin i have it all welded in thanks for the offer
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