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Discussion Starter · #1 ·
Well I never thought I would do it but today after a visit to the local Corvette specialist and seeing all the Z06's in his shop all set up for auto cross and all sitting very low I agreed to let him lower mine just a minimal amount. He called it "using available factory adjustment". I am also getting the recall for the column lock done and installing the CAGS defeat.
Does anyone have any before and after pics of this type body dropping? Also has anyone had experience with this Cincinnati dealer "McCluskey Chevrolet"?

Thanks

Greg
 

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Discussion Starter · #2 ·
anyone? :D

dryforkz06 said:
Well I never thought I would do it but today after a visit to the local Corvette specialist and seeing all the Z06's in his shop all set up for auto cross and all sitting very low I agreed to let him lower mine just a minimal amount. He called it "using available factory adjustment". I am also getting the recall for the column lock done and installing the CAGS defeat.
Does anyone have any before and after pics of this type body dropping? Also has anyone had experience with this Cincinnati dealer "McCluskey Chevrolet"?

Thanks

Greg
 

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Danny Popp @ McCluskey Chevrolet is one of the best Corvette Technicians in the US. He is also one of the top drivers in the US, winning many SCCA National Tour and Pro Solo National Championships, especially in "A Street Prepared".

He prepares many of the top Pro Solo & National Drivers cars. He was recently featured in one of the national Corvette Magazines.

In short, he knows what he is doing.

You'll get about a 1" drop using the factory spring perch bolt adjusters.
 

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What is "full" lowering (lowest you can go with stock adjustment) on the car.. 5 turns??
 

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DJWorm said:
Danny Popp @ McCluskey Chevrolet is one of the best Corvette Technicians in the US. He is also one of the top drivers in the US, winning many SCCA National Tour and Pro Solo National Championships, especially in "A Street Prepared".

He prepares many of the top Pro Solo & National Drivers cars. He was recently featured in one of the national Corvette Magazines.

In short, he knows what he is doing.

You'll get about a 1" drop using the factory spring perch bolt adjusters.
Pardon my naivete - what is happening with the "stock" adjustment? Is it per DJWorm description in Thread #5 above?
 

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When you lower the Z06 per factory recommendatiions on the video tape that comes with the car; you back off the rear spring perch bolt nuts until only 2 threads are left and the front spring perch nuts go the opposite way. You must relieve pressure on the front spring while doing this.

If you want to lower further, you must replace the rear bolts with longer aftermarket bolts and either cut 2/3 OFF the front spring perch bushings or replace the front bolts wiith shortened bushigs. Hardbar has excellent Titanium Rear bolts and shortened front SS bolts with Delrin bushings.

The car can be lowered even further by replacing the F/R springs with VB&P Extreme springs which have a better recurve and are stiffer; thus you can run the car lower with less deflection.

The ultimate would be to install a coil over set up which allows tailored spring rates and ride heights on each corner per the actual corner weight.

No matter which way you lower ypou should recheck the alignment and make sure you have adequate rake left in the car,
 

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Discussion Starter · #9 ·
DJ

I appreciate the testimonial on Danny. That definitely makes me more comfortable.

How much did you lower yours?
How far does the body drop with the three turn option I have been hearing about?

I have until Tuesday @ 9:00am to decide :eyes:


DJWorm said:
Danny Popp @ McCluskey Chevrolet is one of the best Corvette Technicians in the US. He is also one of the top drivers in the US, winning many SCCA National Tour and Pro Solo National Championships, especially in "A Street Prepared".

He prepares many of the top Pro Solo & National Drivers cars. He was recently featured in one of the national Corvette Magazines.

In short, he knows what he is doing.

You'll get about a 1" drop using the factory spring perch bolt adjusters.
 

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dryforkz06 said:
DJI appreciate the testimonial on Danny. That definitely makes me more comfortable.
If DJWORM says it...Believe it :yeadog:

Lowering gives an excellent look to the car and maybe a SOTP feel that it is tighter to the road. A qualified person like this guy Danny knows how to keep the correct rake in the car. Go for it and enjoy!
 

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Thanks DJ - would consider lowering for appearance factor.By the way does changing the shocks to '04 units affect any of this ie thought I read that the '04's are lower right from the factory because of the different shocks?Coilovers doesn't seem to be a popular mod. with ZO6 owners - any reason?
 

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Discussion Starter · #12 ·
Reposting hoping DJ will see it.

dryforkz06 said:
DJ

I appreciate the testimonial on Danny. That definitely makes me more comfortable.

How much did you lower yours?
How far does the body drop with the three turn option I have been hearing about?

I have until Tuesday @ 9:00am to decide :eyes:
 

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dryforkz06 said:
DJ


How far does the body drop with the three turn option I have been hearing about?
:eyes:
I don't think it will be enough for you to even tell that it has been lowered. Backing the bolts off for the maximum drop will only give you 15 MM with the stock bolts and no cutting. :cheers:
 

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Depending on where the ride height was from the factory you will gwt 15-25mm drop (@1") using the factory method.

'04 shocks are not any lower than other years OEM Sachs the only have different rebound valving.

Mine is lowered to the max. (past the factory recommendations) with longer rear bolts because we run in the same class as Danny.

Note if you lower past the factory recommendations then you may need shorter shaft and body shocks.
 

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Discussion Starter · #15 ·
Thanks IT L Go and DJ

I hope someday I can help you guys out but it probably won't be corvette related. I used to think I knew a lot about these things until I landed at Z06vette.com.

Thanks again

Greg
 

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Discussion Starter · #16 ·
Well I finally got it done. Lowered on factory bolts,aligned and balanced. I must admit if its only one inch it sure is noticeable. I love it. Now to get used to a new ride height so I don't scrape it on anything. For those of you that live in or around Cincinnati Danny Popp @ McCluskey Chev is great to work with. :z:
 

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DJWorm,

Do you by any chance know what the chassis ride height in the front and rear of the car should be when the car is lowered to the 15mm factory recommendation? I am concerned about the stock dampeners running out of travel on compression if I lower it too much. Thanks!
 
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