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Old Nov 12, 2016 | 08:59 PM
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I own a 1989 6 spd Z51

Quick question regarding the Corvette suspension and kits that remove the leaf spring and make the suspension truly independent. Do the suspension kits remove or eliminate the Corvettes tendency to bounce over ripples in the road when cornering.
I think that by removing the leaf spring the suspension would not translate from left to right bumps and road irregularities. Just wondering if anyone has tried this and if it has worked. I drive the car a lot and very rarely on a race course.

Thank you
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Old Nov 13, 2016 | 06:56 AM
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You're going to spend a lot of money for every little improvement. If any.

The evidence of cross-talk is all anecdotal. GM will tell you it's not anything even worth thinking about. The people who sell coil over suspensions will tell you its a huge deal.

On a street car it's probably not worth thinking about.

On an '89 I would start looking at all the bushings as a first step. Also check the rear wheel bearings.

If you have Bilstein shocks you can send them out to Bilstein in CA and have them rebuilt for a very reasonable cost.



Richard Newton
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Old Nov 13, 2016 | 07:48 AM
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Originally Posted by jseremba
I own a 1989 6 spd Z51

Quick question regarding the Corvette suspension and kits that remove the leaf spring and make the suspension truly independent. Do the suspension kits remove or eliminate the Corvettes tendency to bounce over ripples in the road when cornering.
I think that by removing the leaf spring the suspension would not translate from left to right bumps and road irregularities. Just wondering if anyone has tried this and if it has worked. I drive the car a lot and very rarely on a race course.

Thank you
One of the best handling cars in the wold in 1989. Why mess with it? Try different shocks and tire pressures
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Old Nov 13, 2016 | 08:15 AM
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Originally Posted by Cruisinfanatic
One of the best handling cars in the wold in 1989. Why mess with it? Try different shocks and tire pressures
This is a great response. All that drives me nuts is that harsh hit and slight shuffle on uneven surfaces.
Shocks and bushings?

And thank you for putting it in proper perspective, seriously.
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Old Nov 13, 2016 | 12:23 PM
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Yes, basic suspension maintenance, good tires and alignment, if you're getting a harsh ride and "shuffle" on un-even surfaces.


Originally Posted by jseremba
Quick question regarding the Corvette suspension and kits that remove the leaf spring and make the suspension truly independent. Do the suspension kits remove or eliminate the Corvettes tendency to bounce over ripples in the road when cornering.
I think that by removing the leaf spring the suspension would not translate from left to right bumps and road irregularities.
The behavior of the suspension is not defined by the spring type...and switching to coil overs will not make it "truly independent". The sway bars eliminate any chances of that happening. If your car is displaying any of the characteristics that you've mentioned:
*Bouncing over ripples
*Harsh hits
*Shuffle on uneven surfaces
...it sounds like the basics to me. Good shocks, proper alignment and good tires (with the right tire pressure).
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Old Nov 13, 2016 | 06:31 PM
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[QUOTE=rfn026;1593458793]You're going to spend a lot of money for every little improvement. If any.

The evidence of cross-talk is all anecdotal. GM will tell you it's not anything even worth thinking about. The people who sell coil over suspensions will tell you its a huge deal.

On a street car it's probably not worth thinking about.

On an '89 I would start looking at all the bushings as a first step. Also check the rear wheel bearings.

If you have Bilstein shocks you can send them out to Bilstein in CA and have them rebuilt for a very reasonable cost.


I had never heard of this. Will they rebuild the OE Bilstein shocks as well, or just ones that they sell directly? I was going to replace mine this winter, but if possible I may go this route.

Last edited by Patsgarage; Nov 13, 2016 at 06:32 PM.
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Old Nov 14, 2016 | 10:12 AM
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Here's the link for the rebuilding service.

I've had them rebuild several sets for me. One set I bought from a scarp yard.

Keep in mind that they don't do cosmetic restoration though. They just fix all the internals. You can even request what you would like. I had one set for the street and another set for the track.



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Last edited by rfn026; Nov 14, 2016 at 10:17 AM.
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Old Nov 14, 2016 | 11:02 PM
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Originally Posted by rfn026
Here's the link for the rebuilding service.
Do you mean http://www.bilsteinus.com/products/s...rvice/service/ ?
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Old Nov 15, 2016 | 11:50 AM
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The OE Bilsteins say "Delco" (in addition to "Bilstein") and these don't get a free rebuild.

Free rebuilds are only for the aftermarket Bilsteins that do NOT say Delco.
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Old Nov 16, 2016 | 10:04 AM
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I never said it was free.

It is reasonable though. You also get custom valving.

Sorry about the wrong link.

Richard Newton

Last edited by rfn026; Nov 16, 2016 at 10:05 AM.
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Old Nov 16, 2016 | 10:41 AM
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Exactly, I just wanted to inform those with aftermarket Bilsteins that they can be reconditioned for free. Of course if someone buys their own replacment Bilsteins, they will know what is warrantied. But some people buy cars and don't know the OE shocks have already been swapped out, and maybe don't know this is a free service for the aftermarket equipment.
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