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

C4 caster adjustment? how?

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Old May 27, 2010 | 11:12 AM
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dizwiz24
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Default C4 caster adjustment? how?

I have a 93 c4.

I can see where shims can be added and removed, at 2 points, on each upper control arm camber, or toe (ie. if you just put put a shim at one point and not the other).

What I cannot see is how you would adjust caster.

Is caster fixed? or adjustable?
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Old May 27, 2010 | 11:24 AM
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You adjust caster by changing the shims on the upper a-arm. By putting more or less on the front or the rear you can move the upper ball joint forward or backwards to change the caster.
The toe is adjusted with the tie rods.
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Old May 27, 2010 | 02:21 PM
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As Paul said, caster is changed by moving the shims from the front to back or vice versa. Camber is changed by adding or subtracting the same amout of shims front and back.
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