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| j3studio | [Attempting The Impossible] Making Early Z51 C4 Suspension Compliance As Good As Possible | ||
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Elite Guru
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[1985, Z51, very stock]
So, in my continuing attempts at restoring but still driving my 1985, we come to a question of priorities. I'd like to make the suspension as compliant as possible within the original design limits. My question is: Which 24 year-old suspension components can be replaced to give the best return on achieving this goal? The original Bilstein shocks have been replaced with exact replicas. The car has a reasonably current alignment (about 3,000 miles ago) and modern tires with about 16,000 miles on them. |
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Posted on: 2009/1/26 22:51
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| CentralCoaster | Re: [Attempting The Impossible] Making Early Z51 C4 Suspension Compliance As Good As Possible | ||
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Senior Guru
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In front, the rubber bushings are bonded to the metal. This adds stiffness to the suspension.
I would recommend some polyurethane up here, if installed and lubed properly, it will be more compliant. I would not recommend them however in the front sway bar end links, or anywhere in the back of the car. What will your resto rules allow? |
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Posted on: 2009/1/26 23:34
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1985 Z51, ZF6 |
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| BillH | Re: [Attempting The Impossible] Making Early Z51 C4 Suspension Compliance As Good As Possible | ||
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The Stig Moderator
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Chainging the bushings may help, a little. But, you have Z51 springs on the car. Nothing but changing them will make a big difference.
Alignment has zip,zilch, nada to do with it. |
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Posted on: 2009/1/27 0:36
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| bogus | Re: [Attempting The Impossible] Making Early Z51 C4 Suspension Compliance As Good As Possible | ||
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Grand Imperial Pooh-Bah
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For ride, you might get away with the base Delco shocks.
But I agree with Bill... you might want to swap springs. The thing is, once you get the car fully NCRS'd, then you can do this!!! |
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Posted on: 2009/1/27 4:50
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| CentralCoaster | Re: [Attempting The Impossible] Making Early Z51 C4 Suspension Compliance As Good As Possible | ||
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Senior Guru
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The spring codes are probably part of ncrs.
Pry some off and glue them to a base spring. If it makes you feel better, the 85Z is about 1/2 the rate of the 84Z. |
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Posted on: 2009/1/27 5:23
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1985 Z51, ZF6 |
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| vetteoz | Re: [Attempting The Impossible] Making Early Z51 C4 Suspension Compliance As Good As Possible | ||
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Senior Guru
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Quote:
On the springs I have the codes is stamped into the spring itself. |
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Posted on: 2009/1/27 7:23
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