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

autocross alignment done

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Old Sep 21, 2011 | 07:20 PM
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Default autocross alignment done

Got my alignment finished today over @ FasTrack

Great place, a pro shop that can deal with custom suspensions no problem.

Car was aligned weighed, so it would be correct with me in it.

Set the ride height 1st.
Stock is
7.8in front & rear
I set mine @
6.25in front
5.75in rear
which actually makes the wheel lip clearance even.

Camber, I decided to go ahead and crank up the camber since I have my truck for a daily driver, and I like to autocross.
Front
2.5 degrees
7.0 degrees caster
0.05 degrees toe out
Rear
2.0 degrees
0.20 degrees toe in

I managed to get that much caster & camber with the much ride height because I have adjustable a-arms on the front.

Previously, I had the car 'in the weeds' but this made the top a-arms angle UP, stock they angle DOWN, so I knew that couldn't be good for geometry.
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Old Sep 21, 2011 | 07:37 PM
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I am willing to bet those adjustable a-arms bump you to a modified class am I correct?
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Old Sep 21, 2011 | 07:45 PM
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Yes SCCA SSM (Super Street Mod)

though you can use offset bushing and still be in Street prepared.
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Old Sep 21, 2011 | 07:59 PM
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Cool

Negative 2.5 camber ......

Pictures

I know this is the 50th time I ask but, any dyno numbers yet?
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Old Sep 21, 2011 | 08:07 PM
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just got the 500 miles on it

putting a bigger overflow tank it in

we tried running a smaller one but it wasn't working out.

fortunately Vortech still had some despite the kit being discontinued.
The brown van arrives tomorrow
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Old Sep 21, 2011 | 09:13 PM
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Nice! I just got mine aligned as well. I cut down the conical spacers but the camber wasn't even per side. The inside of the tires is getting worn down pretty fast street driving. The car turns sooo much better with the camber!!! I could not get that much caster with the stock arms. This is the most:

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Old Sep 21, 2011 | 09:16 PM
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BTW I still got 0.75in of washer left!
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Old Sep 22, 2011 | 12:00 AM
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Old Sep 28, 2011 | 05:52 PM
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more on this over in the autocrossing section

http://forums.corvetteforum.com/auto...ment-done.html
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Old Nov 27, 2011 | 03:05 PM
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Doing some more research, it turns out stock is an anhedral suspension geometry

The IC is on the outside.

Which of course changes when the car is lowered
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