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C5 plus ZO6 Springs = ???

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Old Oct 6, 2004 | 09:38 PM
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Default C5 plus ZO6 Springs = ???

I have added ZO6 sway bars and 2004 shocks to my M6 2004 C5, the difference is fantastic. Does anyone know just how much of an approvement in cornering and handling I could expect by adding ZO6 springs as well.

Last edited by Mad Brit; Oct 6, 2004 at 09:49 PM. Reason: typo
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Old Oct 6, 2004 | 09:45 PM
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2005 C5 eh?

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Old Oct 6, 2004 | 11:37 PM
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Originally Posted by Mad Brit
I have added ZO6 sway bars and 2004 shocks to my M6 2004 C5, the difference is fantastic. Does anyone know just how much of an approvement in cornering and handling I could expect by adding ZO6 springs as well.
Depends on if you have the base suspension or Z51 package. If Z51, only difference is rear spring, and it's only 10% stiffer. Not worth the $$ to upgrade in my opinion. Now if you are on the base suspension...
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Old Oct 6, 2004 | 11:44 PM
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Originally Posted by Mad Brit
I have added ZO6 sway bars and 2004 shocks to my M6 2004 C5, the difference is fantastic. Does anyone know just how much of an approvement in cornering and handling I could expect by adding ZO6 springs as well.
I don't think the cost versus return will be near as good as the shocks and sway bar swap. Try the tunnel brace only $130 and let us know how much improvement you get. If that isn't enough then spend the $1200 for Z06 springs.
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Old Oct 7, 2004 | 07:49 AM
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Default Dan the C5 Man

Originally Posted by Dan_the_C5_Man
Depends on if you have the base suspension or Z51 package. If Z51, only difference is rear spring, and it's only 10% stiffer. Not worth the $$ to upgrade in my opinion. Now if you are on the base suspension...
Thanks for the reply, I do have the base suspension package.
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Old Oct 8, 2004 | 02:41 AM
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Originally Posted by Mad Brit
Thanks for the reply, I do have the base suspension package.
Well, in your case it might just be worth it then. But maybe you can find them in good, used condition for cheap. If not, you'd probably be better off spending that kind of dough on coil-overs.. That's what I'd do.
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Old Oct 8, 2004 | 07:28 AM
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Originally Posted by frank dupuy
I don't think the cost versus return will be near as good as the shocks and sway bar swap. Try the tunnel brace only $130 and let us know how much improvement you get. If that isn't enough then spend the $1200 for Z06 springs.
ummmmm .... www.gmpartsdirect.com

More like $650 for the z06 springs.

Or you can go to www.ecklers.com and buy the composite springs.

OR you can spend a little more, get rid of the springs, and install coil overs.
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Old Oct 8, 2004 | 08:52 AM
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Mad Brit
I finally did what you are asking, I added Z06 springs (from Karshop, thanks Gene)
The improvement was worth the job. Remember, the three parts: springs, shocks and swaybars were matched by GM and they fit together pretty well.

With the old springs in long slow up and downs on the road, the car moved up and down a lot. That is because the shocks are velocity related, and at low velocities they do not build up much force.

So go ahead and add the springs.
Frederik
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Old Oct 8, 2004 | 10:42 AM
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Do the springs. I did them about 2 months ago and they make a world of difference over the base springs. I wish I did them a lot earlier.
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Old Oct 8, 2004 | 11:21 AM
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For that price, isn't it better to add an aftermarket Z06 spring, like Eibach pro kit?
Probably stiffer and improves handling as well as lowers your car a little which lowers the center of gravity also improving handling.
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Old Oct 8, 2004 | 01:42 PM
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Eibach doesn't make springs for the C5 I don't believe. Hell, the last time I checked there were only 2 or 3 companies that did (including GM).

Dope
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Old Oct 8, 2004 | 02:34 PM
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http://www.vbandp.com/ Top of the line springs.
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