Volume X, Issue 11, Page 90

Check Out That Chassis


11/11/2008

Having been a long-time fan of the middle of the alphabet Stock class cars, I was wondering if you could shed some light on the whys and hows of the extreme launch attitudes exhibited by these cars, especially the mid and full size GM cars. Is this wild twisting something inherent to the triangulated 4-link and coil spring rear suspension system?

Keith LeBlanc
South Carolina

Keith LeBlanc,

The GM cars with the stock type 4-link system do have a problem with
the roll resistances of the triangulated 4-link. The stock type sway bar or anti-roll bar does not do enough to over come this problem. The air bag in the right side spring will help some but the real fix is a true anti-roll bar like we use on a lot of other race cars. The biggest problem with the stockers is, it should be a bolt on suspension part and this makes it hard to get the car to work the way it could and still pass tech.

Scott Weney
President, S & W Race Cars
610-948-7303X111

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