C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Please check alignment numbers for me.

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Old Jun 26, 2024 | 10:17 AM
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Default Please check alignment numbers for me.

Had an alignment done yesterday. I'm told the front caster number are OK, even though they are red. Steering wheel is not centered (leaning right), but the car seems to track straight. I absolutely despise doing an alignment on any of my vehicles...it's a hit or miss deal.

What are your thoughts?

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Old Jun 26, 2024 | 11:35 AM
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What year car ? My 96 service manual says 6 deg +- .5 deg with .7 cross readings variance
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Old Jun 26, 2024 | 01:17 PM
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It's a 96 as well.
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Old Jun 26, 2024 | 01:45 PM
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Here you go. Take the car back to them and tell them they are wrong and to put it into alignment. Print these off for them.
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File Type: pdf
1996AlignmentSpecsFront.pdf (67.8 KB, 79 views)
File Type: pdf
1996AlignmentSpecsRear.pdf (54.8 KB, 106 views)
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Old Jun 26, 2024 | 01:46 PM
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RF I'd add a thin (same thickness) shim to both front and rear, then have the toe reset. I wouldn't have an issue with that caster unless it steers hard in parking lots.
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Old Jun 26, 2024 | 02:12 PM
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Thanks guys for the info.

This is so damn aggravating. I hate when other people put their hands on my cars!
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Old Jun 26, 2024 | 02:20 PM
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Originally Posted by ex-x-fire
RF I'd add a thin (same thickness) shim to both front and rear, then have the toe reset. I wouldn't have an issue with that caster unless it steers hard in parking lots.
Can the camber shim be added without affecting the other measurements?
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Old Jun 26, 2024 | 02:37 PM
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Steering wheel is not centered
This is enough for me to make them redo it. Which I have.
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Old Jun 26, 2024 | 02:58 PM
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Originally Posted by rremesal
This is so damn aggravating. I hate when other people put their hands on my cars!
Just be glad that we have clamshell opening hoods which provide easy access to the front suspension shims. On other cars, like my 1981 Z-28, the access requires a tech leaning over your fender with awkward access, risking paint scratches etc. Much less nerve-wracking on the Corvette.
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Old Jun 26, 2024 | 06:59 PM
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Only if you do an equal thickness on the front and rear of the upper control arm.
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Old Jun 26, 2024 | 08:23 PM
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I've suggested in the past that a person collect/buy correct shims for these cars and provide them if the shop has none, incorrect or whatever, There's a few different styles. There's shims that have drilled tabs that you can actually safety wire for security. You'd be surprised maybe that a shop actually doesn't have correct shims to align these cars. Did your shop maybe run short? The steering wheel center certainly requires correction.
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Old Jun 26, 2024 | 10:29 PM
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If the steering wheel is clocked to the right while going straight down the road, centering the wheel should cause the car to turn left. To correct this, open the hood and set the toe on both front wheels slightly to the right (toe the left front in and toe the right front out by an equal amount (like a 1/4 turn)). If you don't want to do this yourself, take it back and have the alignment shop do it. It is likely that the wheel wasn't exactly centered when they set the toe the first time around.
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Old Jun 27, 2024 | 10:08 AM
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Team,

I got the shims yesterday (3mm or 1/8"). I called the shop and I'm taking the car back tomorrow. I bought 15 shims and I'm hoping that's enough.

I have adjusted the steering wheel centering before. I just did it on my 2018 Silverado and it is perfectly straight. However, I'll wait until they are done the second time and go from there.

Thank you all for the responses.

Ric
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Old Jun 27, 2024 | 05:13 PM
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Originally Posted by tequilaboy
If the steering wheel is clocked to the right while going straight down the road, centering the wheel should cause the car to turn left. To correct this, open the hood and set the toe on both front wheels slightly to the right (toe the left front in and toe the right front out by an equal amount (like a 1/4 turn)). If you don't want to do this yourself, take it back and have the alignment shop do it. It is likely that the wheel wasn't exactly centered when they set the toe the first time around.
This is what I would do and have done in the past.
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