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Old 07-06-2006, 07:44 PM
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Those old GM cars had a problem with the crossmembers sagging and causing negative camber. The closeness between your manifold and the upper arm,plus the fact that all the shims were removed ,would indicate a sagged crossmember. It is an easy fix with the engine out,a little tougher with the engine in the car. If you have access to old frame books,they will give you a measurement across the crossmember at the shim contact area.With the engine out,I just put a 10 ton portopower between the upper control arm shafts and spread about 1/2 inch past the factory spec. With the engine in the car{truck} the crossmember can be spread on a frame machine. A lot of new vehicles do run neg.camber, products. you will get some inside tire wear with neg camber. at our shop we usually try for a little positive camber if possible.
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