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[Z06] Coil Overs, shocks or what?

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Old Feb 27, 2011 | 12:28 AM
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Default Coil Overs, shocks or what?

I posted the following in the Autocrossing/Road racing, but I thought I would see what my fellow ZO6 brothers/sisters think:


I currently have a 2003 ZO6 that I have lowered; removed front bolts and longer bolts in the back. Probably close to a 1.5 inch drop all around.

I am looking for better handling. I do not autocross or road race. I do like to do some spirited driving, love roads through the mountains, like tail of the dragon and things like that.

Question is, what would you do? I am very interested in hearing from you guys. My car has 43K on it with about 1K on the lowered setup. Shocks and springs are stock ZO6.

Thanks,

Micah
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Old Feb 27, 2011 | 01:01 AM
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Coilovers are the way to go, you get the lowered stance (without bottoming) and better handling. Ive used the Pfadts from RSD on my last Z and it was one of the better mods I did.
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Old Feb 27, 2011 | 01:53 AM
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Good info in this thread about what happens to shock travel when going lower than stock bolts. http://forums.corvetteforum.com/c5-t...ng-the-c5.html

Coilovers aleviate the issues.
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Old Feb 27, 2011 | 07:23 AM
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I'm in the mountains as well.

Pfadt Coils & sways, aggressive street alignment & PS2's. You can push the car hard enough to scare yourself!

The ride height is adjustable without effect to suspension travel. The ride quality is very good & adjustable.

My favorite part is the side stepping when the pavement is uneven & power is on.....gone.
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Old Feb 27, 2011 | 08:05 AM
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Better handling?

raise your car back up to stock right height. or no lower then 1" in front with the correct rake in back.

Get a great agressive street alignment. and keep the Z06 suspension

Coil overs are not a good idea unless you have the time and experience to do the set ups and testing. The are not bolt on and go.

Good Luck
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Old Feb 27, 2011 | 10:10 AM
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Originally Posted by mph1972
I posted the following in the Autocrossing/Road racing, but I thought I would see what my fellow ZO6 brothers/sisters think:


I currently have a 2003 ZO6 that I have lowered; removed front bolts and longer bolts in the back. Probably close to a 1.5 inch drop all around.

I am looking for better handling. I do not autocross or road race. I do like to do some spirited driving, love roads through the mountains, like tail of the dragon and things like that.

Question is, what would you do? I am very interested in hearing from you guys. My car has 43K on it with about 1K on the lowered setup. Shocks and springs are stock ZO6.

Thanks,

Micah

Lowering the car that far and removing the front spring bushing was not a good idea. Coil over shocks are a waste of time and money for a street car, anyone who tells you different is either inexperienced or just plain embellishing the information so they can separate you from your money.
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Old Feb 27, 2011 | 10:19 AM
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Originally Posted by AU N EGL
Better handling?

raise your car back up to stock right height. or no lower then 1" in front with the correct rake in back.

Get a great agressive street alignment. and keep the Z06 suspension

Coil overs are not a good idea unless you have the time and experience to do the set ups and testing. The are not bolt on and go.

Good Luck
Time and time again, I've maintained that if you're going to get coils, get the car corner balanced and then actually flog the car to get the damper settings right.

Originally Posted by bullitt4110
Coilovers are the way to go, you get the lowered stance (without bottoming) and better handling. Ive used the Pfadts from RSD on my last Z and it was one of the better mods I did.
You can get the exact same effect from a set of shocks. Shocks designed for lowered cars with shorter shock will make your car handle just as well on the street as a set of coilovers, seeing as you certainly aren't going to be hitting the upper threshold of what coilovers can do for you on street tires on a backroad with a surface that is constantly changing.


Honestly, for a car that isn't going to be seeing HPDEs, I'd raise the car back up to a reasonable height, maybe 04 shocks, and seat time. C5Zs handle great. People should really spend the time to learn how to use the car, stock, to the best of its abilities before throwing money at it.

However, if you absolutely feel you must have a fully adjustable setup, or just be slammed without constantly bottoming out the shocks, Pfadt makes a very nice product.
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Old Feb 27, 2011 | 10:48 AM
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Pfadt Coils & sways, aggressive street alignment & PS2's. You can push the car hard enough to scare yourself! This is hardly a measure for success, this can be done with the OEM suspension.

The ride height is adjustable without effect to suspension travel. The ride quality is very good & adjustable. Not entirely accurate, the only way to drop the car and maintain full suspension travel is with drop spindles.

My favorite part is the side stepping when the pavement is uneven & power is on.....gone. Coil over shocks are not needed to eliminate side stepping.

Last edited by ipuig; Feb 27, 2011 at 10:51 AM.
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Old Feb 27, 2011 | 11:01 AM
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Like mentioned in your other thread I would go with Bilstein shocks stock or re-valved by DRM, raise the car some, get good street tires, and a somewhat aggressive street alignment. I was going to go with those shocks but got a heck of a deal on some Pfadt shocks from TPE.
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Old Feb 27, 2011 | 04:10 PM
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I am running the PFADT'S as well .. love the way it handles , looks...
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Old Feb 27, 2011 | 04:14 PM
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I am not certain that I will not do any road racing or autocrossing, but I went ahead and did what I normally do...OVERKILL.

I just purchased a set of:

LG Motorsports GT2 Adjustable Coilovers

There has been so much thrown at me on this topic and I appreciate it, but I want the stance as well as performance. I may not set it up as low as I am now, but I will always have the option to do as I want with the coil overs.

Micah
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Old Feb 27, 2011 | 04:14 PM
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Originally Posted by 0H1Z06
I am running the PFADT'S as well .. love the way it handles , looks...
Love it and I want something similar to that.
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Old Feb 27, 2011 | 04:43 PM
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The coilovers will let you lower the car without bottoming, but if you lower the car that much without dropped spindles, the handling won't be as good as a properly set up stock car.

The reason for that is actually pretty simple. If you lower the car without dropped spindles the geometry of the suspension will lower the roll centers too much and the handling won't be as good. The car will look sexy, but it won't handle very well.
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Old Feb 27, 2011 | 06:26 PM
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Originally Posted by mph1972
I went ahead and did what I normally do...OVERKILL.


I'm sure you'll be pleased with those LG's.
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Old Feb 27, 2011 | 07:39 PM
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Originally Posted by mph1972
I am not certain that I will not do any road racing or autocrossing, but I went ahead and did what I normally do...OVERKILL.

I just purchased a set of:

LG Motorsports GT2 Adjustable Coilovers

There has been so much thrown at me on this topic and I appreciate it, but I want the stance as well as performance. I may not set it up as low as I am now, but I will always have the option to do as I want with the coil overs.

Micah
Whatever performance improvement you get if any will not be noticible, but you will have the boy-racer look you're looking for.
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Old Feb 27, 2011 | 07:50 PM
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Originally Posted by ipuig
Whatever performance improvement you get if any will not be noticible, but you will have the boy-racer look you're looking for.
While I agree that coilovers are overkill for street use...his front leaf is riding directly on the lower control arms and he has longer rear bolts, which means he's most likley riding on the rear shock bumpstops. If that is the case, he'll notice a big difference in ride quality and handling.
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Old Feb 27, 2011 | 10:03 PM
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Originally Posted by Solofast
The coilovers will let you lower the car without bottoming, but if you lower the car that much without dropped spindles, the handling won't be as good as a properly set up stock car.

The reason for that is actually pretty simple. If you lower the car without dropped spindles the geometry of the suspension will lower the roll centers too much and the handling won't be as good. The car will look sexy, but it won't handle very well.
Thanks. When I install them, I don't plan to go as low as I am currently. I will more than likely set the car up as if it were lowered on STOCK BOLTs.

I am looking forward to the improved handling.

I love the look I have currently, but when I have a passenger, I am very limited on where I can go.
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Old Feb 28, 2011 | 02:19 AM
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Coilovers were the best mod I ever did for my corvette.

Although, admittedly you might be able to get the same results by changing the shocks or springs.
At the time I bough mine it was not much more to just buy coilovers from pfadt.

Before, my stock Z06 with new tires was frankly dangerous to drive fast. Mid-corner bumps would send the rear end skipping out.

Afterwards, the skip is essentially gone, and the car feels just much more planted. It's just easier to drive fast.
I bought my car to drive fast.
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Old Feb 28, 2011 | 02:40 AM
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Originally Posted by dagon138
Coilovers were the best mod I ever did for my corvette.

Although, admittedly you might be able to get the same results by changing the shocks or springs.
At the time I bough mine it was not much more to just buy coilovers from pfadt.

Before, my stock Z06 with new tires was frankly dangerous to drive fast. Mid-corner bumps would send the rear end skipping out.

Afterwards, the skip is essentially gone, and the car feels just much more planted. It's just easier to drive fast.
I bought my car to drive fast.
Nice read and I look forward to it!
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Old Feb 28, 2011 | 08:35 AM
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Originally Posted by ipuig
Pfadt Coils & sways, aggressive street alignment & PS2's. You can push the car hard enough to scare yourself! This is hardly a measure for success, this can be done with the OEM suspension.

The ride height is adjustable without effect to suspension travel. The ride quality is very good & adjustable. Not entirely accurate, the only way to drop the car and maintain full suspension travel is with drop spindles.

My favorite part is the side stepping when the pavement is uneven & power is on.....gone. Coil over shocks are not needed to eliminate side stepping.
Originally Posted by dagon138
Coilovers were the best mod I ever did for my corvette.

Although, admittedly you might be able to get the same results by changing the shocks or springs.
At the time I bough mine it was not much more to just buy coilovers from pfadt.

Before, my stock Z06 with new tires was frankly dangerous to drive fast. Mid-corner bumps would send the rear end skipping out.

Afterwards, the skip is essentially gone, and the car feels just much more planted. It's just easier to drive fast.
I bought my car to drive fast.
Cannot be! Just read the above quotes!

I would also like to add my C6 is a Z51 which demonstrated the ill handling characteristics of my C5.

Was happy with C6 as far spring rates, diving & squatting were better than the F45 C5. So I thought I would try a shock only upgrade, Pfadt adjustable. That helped the side steeping, the C5 with coil overs has a much better SOTP when stepping over the sensible mountain road line.
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