Lowering and Alignment Question

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Mar 10, 2008 | 09:38 PM

lawZ

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Instructor

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Lowering and Alignment Question

I'll soon be lowering my 04 Zo6 on stock bolts. I only drive the car on the street.What specs do I have the car aligned to,and where do I find them?Thanks.

Mar 10, 2008 | 10:20 PM

Gideon's_Test

Drifting

Joined: Dec 2006

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From: Holly, Michigan

http://forums.corvetteforum.com/showthread.php?t=969054

Z06 Service Manual Alignment --- Source
LEFT & RIGHT FRONT:

Camber: Specified Range: -1.2 to -0.2 Optimal: -0.7
Caster: Specified Range: 6.4 to 7.4 Optimal 6.9
Toe: Specified Range: 0.15 to 0.25 Optimal 0.20

FRONT
Cross Camber: Specified Range: -0.5 to 0.5 Optimal: 0.0
Cross Caster: Specified Range: -0.5 to 0.5 Optimal: 0.0
Total Toe: Specified Range: 0.30 to 0.50 Optimal: 0.40

LEFT & RIGHT REAR
Camber: Specified Range: -1.2 to -0.2 Optimal: -0.7
Toe: Specified Range: -0.06 to 0.05 Optimal: -0.005

REAR
Total Toe: Specified Range: -0.11 to 0.09 Optimal: -0.01
Thrust Angle: Specified Range: -0.10 to 0.10 Optimal: 0.00

Mar 11, 2008 | 10:33 PM

lawZ

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Thank you very much,I appreciate your help.

Mar 20, 2008 | 10:04 AM

kasper-pA-

Burning Brakes

Joined: Jan 2003

Posts: 881

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From: Houston TX

St. Jude Donor '05, '14, '15

I just put some Z07 wheels (non run flat tires) on and some Z06 springs, going to get it aligned soon... I'm lowered as well, I read awhile back that you shouldn't use the Z06 alignment specs with run flats because of the stiffness of the run flats.. now can/should I align mine with the z06 specs since I'm off of the run flats?

**edit**
I just pulled these out of the "search", anyone running these with a similar suspension setup , if so how do they like

these are from : SDWYZ C5 "Mild - Mildy Aggressive"

Front Individual Toe +0.03 degree +0.03

Front Sum Toe +0.06 degree +0.06

Steering Wheel Angle 0.0 degree 0.0

Front Individual Caster +6.9 degree L +6.72 R +6.86 AVG = +6.79

Front Cross Caster within 0.50 degree

Front Individual Camber -1.0 degree L -0.83 R -0.79 AVG = -0.81

Front Cross Camber within 0.50 degree

Rear Individual Toe 0.0 degree L 0.0 R -0.01 AVG = -0.005

Rear Sum Toe 0.0 degree -0.01

Rear Thrust Angle 0.0 degree 0.0

Rear Individual Camber -0.80 degree L -0.68 R -0.73 AVG = -0.705

Rear Cross Camber within 0.50 degree

Cheers!

Kasp

Last edited by kasper-pA-; Mar 20, 2008 at 10:17 AM.

Mar 20, 2008 | 11:59 AM

Toque

Tech Contributor

Joined: Jan 2004

Posts: 20,030

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From: Wylie TX --> Less is More, except under the hood !

Quote:

Originally Posted by Gideon's_Test

Very nice ! Thank you !

I just got a set of SP500's and needing an alingment badly. My original wheels/tires I took off were SHOT on the inside of all 4. I mean down to the belts ! The outside of all 4x tires still have some wear before hitting the wear markers. I got it aligned 1.5 yrs ago at the dealership but it seems it was not done right

. I lowered it even more latey with C6 bolts, and longer bolts in the rear.

Your data should help when going to the alignment shop that LG's told me to go to.

Thanks !
Toque

Mar 20, 2008 | 12:25 PM

B-ras

Melting Slicks

Joined: Dec 2004

Posts: 2,677

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From: I have to return some videotapes

Quote:

Originally Posted by Toque

. I lowered it even more latey with C6 bolts, and longer bolts in the rear.

Your data should help when going to the alignment shop that LG's told me to go to.

Thanks !
Toque

FYI- If you're concerned about inside tire wear, you might want to do a bit less camber than indicated in those specs. In any event, ask the alignment shop to give you the before specs so you can see how much camber you had on the car to cause that kind of excessive wear. It's just hard to believe that a dealer would have set it up like that, as dealer specs are typically pretty tame.

Mar 20, 2008 | 06:07 PM

Toque

Tech Contributor

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From: Wylie TX --> Less is More, except under the hood !

Quote:

Originally Posted by abraswell

Abraswell:

Thanks for the added info !

I love this forum !

Thanks !
Toque

Mar 20, 2008 | 06:52 PM

VIPERBLUELX

Drifting

Joined: Nov 2004

Posts: 1,650

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From: Ringgold GA

Quote:

Originally Posted by Toque

. I lowered it even more latey with C6 bolts, and longer bolts in the rear.

Your data should help when going to the alignment shop that LG's told me to go to.

Thanks !
Toque

Heck yeah, are those 18's or 19's?