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Old 12-12-2010, 11:49 AM   #1
KingC6
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Best way to lower a c5 (other than lowering bolts)

yesterday i purchased a 04 z16, totally stock. now im looking into lowering it. i was looking at pfadt coilovers, but do i really need those? im not much concered with how the car handles, however i do want to stay as close to stock ride quality as i can. what are my options?
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Old 12-12-2010, 12:14 PM   #2
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it really depends how much you want to lower it. i lowered mine just by backing out the bolts at the end of the mono spring, i guess you call it, until there was about 1 1/2 threads left. this lowered my car about an 1 1/2 " which was enough for me. i've been told you can remove the bolts altogether with no issues, i would check that out before i did it. how ever you decide tolower your car in case you don't know have it 4 wheels aligned and to re-aim your headlights. hope this helped.
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Old 12-12-2010, 02:21 PM   #3
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If you want to retain ride quailty then get the coilovers. They make the car ride better.
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Old 12-12-2010, 02:24 PM   #4
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Quote:
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If you want to retain ride quailty then get the coilovers. They make the car ride better.
i personally did'nt notice any ride difference, but that's me.
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Old 12-12-2010, 02:49 PM   #5
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Quote:
Originally Posted by KingC6 View Post
yesterday i purchased a 04 z16, totally stock. now im looking into lowering it. i was looking at pfadt coilovers, but do i really need those? im not much concered with how the car handles, however i do want to stay as close to stock ride quality as i can. what are my options?
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Old 12-12-2010, 03:11 PM   #6
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i personally did'nt notice any ride difference, but that's me.
Seriously? Could be due to you having a coupe but I've driven several C-5 Z06's before and after coilover swaps and the ride quality was the thing that struck me most.
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Old 12-12-2010, 05:28 PM   #7
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these are the only pics i have for now, we just got a few inches of snow so she wont be leaving the garage anytime soon. anyway its a 04 z16 with 14,000 miles. only mods are tinted windows and a c6 shift knob

[IMG][/IMG]
[IMG][/IMG]
[IMG][/IMG]
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Old 12-12-2010, 05:44 PM   #8
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Under my avitar, theres a link to my gallery. My car is pretty slammed at 2 1/2 inches, my black c5 was 3 inches. I removed the front bolts, shaved the spring mounting pads at the center of the spring. The ride quality on my black c5 didnt change that much, the silver one is more ridgid, as its a z51 suspension, but on good road, the silver car is a slot car. The rear bolts i replacex with 8" long grade 8 bolts from a hardware store. I just put 19 inch wheels on my car with 30 series tires, so im going to drop it another 1/2 inch
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06 6 speed manual. Z51 . Lemans blue/white stripes. Kooks longtubes / xpipe / Corsa /... Vararam. Electric water pump... Monster clutch.. Customs tunes.. 2 1/2 in h drop and dark ass tint
Old 12-13-2010, 12:24 AM   #9
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There are three ways to lower a C5/C6

1. lowinring on the stock bolts

2. adjustable coil overs (Pfadt, LG etc)

and 3. These http://www.lgmotorsports.com/catalog...oducts_id=1937

number 3 will not affect any part of the suspension geometry, if you are willing to pay the price to get them.
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Old 12-13-2010, 01:02 AM   #10
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Heres my drop. 2 1/2' WITH 19s. As you can see the 19 inch rim with wheel is 3/4 of an inch shorter than the stock tire, (4th pic), so i need to close the gap more, i'll drop the whole car another 1/2".These are 19 on all 4 corners. The stock wheels are 17" front 18" rear. I may go to coil overs one day, but my car is just a weekend warrior. The LG kit looks solid, but only 1" ?



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06 6 speed manual. Z51 . Lemans blue/white stripes. Kooks longtubes / xpipe / Corsa /... Vararam. Electric water pump... Monster clutch.. Customs tunes.. 2 1/2 in h drop and dark ass tint
Old 12-13-2010, 10:49 AM   #11
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I had my Z06 really low with the stock suspension and longer bolts. It really drove rough.

I installed LG GT2 coil overs and my car is at the same lowered height. The ride quality of the car has improved 1000% in every aspect. No side stepping hitting a bump around curves, no front end dipping when braking, no body roll around turns etc, they soak up bumps where before it rattled my teeth... etc...etc... It truly feels like a 4 wheel independent suspension now.



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Old 12-13-2010, 11:00 AM   #12
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Quote:
Originally Posted by Toque View Post
I had my Z06 really low with the stock suspension and longer bolts. It really drove rough.

I installed LG GT2 coil overs and my car is at the same lowered height. The ride quality of the car has improved 1000% in every aspect. No side stepping hitting a bump around curves, no front end dipping when braking, no body roll around turns etc, they soak up bumps where before it rattled my teeth... etc...etc... It truly feels like a 4 wheel independent suspension now.



Toque
couple questions..... are they a direct bolt in, are they adjustable.... can a 3" drop be achieved?
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Old 12-13-2010, 11:05 AM   #13
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Quote:
Originally Posted by T.M. View Post
couple questions..... are they a direct bolt in, are they adjustable.... can a 3" drop be achieved?
I wrote an install procedure on my web site.
http://mysite.verizon.net/res0aae8/webpage.html

See link at the bottom
LG's GT2 Coil Over Install C5 Z06:

They are a direct bolt in yes. Adjustable spring rates, adjustable height, and adjustable shock firmness.




This is how high my car was new.... all the say to where it is now. Im at the same height with coil overs as I was with the longer bolts.

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Old 12-13-2010, 11:08 AM   #14
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Kool thanks, i'll have to install some in the near future. I have a z51 suspension, so i know how high these cars sit new.. was crazy like a 4x4... lol.. i had to remove my bolts and 8" in the rear
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06 6 speed manual. Z51 . Lemans blue/white stripes. Kooks longtubes / xpipe / Corsa /... Vararam. Electric water pump... Monster clutch.. Customs tunes.. 2 1/2 in h drop and dark ass tint
Old 12-13-2010, 11:27 AM   #15
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Quote:
Originally Posted by Toque View Post
I had my Z06 really low with the stock suspension and longer bolts. It really drove rough.

I installed LG GT2 coil overs and my car is at the same lowered height. The ride quality of the car has improved 1000% in every aspect. No side stepping hitting a bump around curves, no front end dipping when braking, no body roll around turns etc, they soak up bumps where before it rattled my teeth... etc...etc... It truly feels like a 4 wheel independent suspension now.

Toque
Mine is lowered on stock bolts up front and longer bolts in the rear. Rides pretty rough and "tracks" real hard. If I hit a dip, depression or anything irregular in the road, the car darts around. Its pretty unsafe and I intend to have it addressed very soon. Toque, this is what you had as well and the coil overs got rid of it?

I am aware there are other ways to address the bump steer, just trying to see if the coilovers can solve that problem while addressing some other concerns of mine.
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