FIX ILEAN (she leans too much)

[USAZR1]

Originally Posted by Karl

Would you happen to know the factory spring rate?

IIRC,the factory spring rate on my stock 94 spring was 430lbs.

[csavaglio]

Here is the ever helpful C4 suspension chart...

http://www.corvetteactioncenter.com/...usp_chart.html

The rates are in n/mm and can be converted to lb/in here...

http://www.convertunits.com/from/pound/inch/to/N/mm

I checked a few of the numbers against the Corvette Specs book, which shows a mix of lb/in and N/mm depending on year and the match using the converter.

Anyhow, stock rates on a '91 ZR-1 is 549 for the front, 228 for the rear. '92 is 431 and 188.

Chris

[gbrtng]

Originally Posted by Vette Guy

Before you go too far, try isolating the front and rear suspensions.... i.e., jack up the front equally and see if the lean to one side remains..... or jack up the rear from the diff and see if your problem is in the front.

"HIZNHRZ" had this same problem for a long time, he even switched the spring around and finally discovered that the rear lean was a front suspension problem.

Regards,
Mark

Mark is getting close here - I would begin by finding a shop that has four load cell pads so you can check the actual weight on the ground of each wheel. Stock car racers use them to set stagger - you are looking for which end of the vehicle is causing the problem. If both front wheels and both rear wheels are close in load, each end may have to be adjusted. If two diagonal wheels are light, something else might be wrong. It sounds like your vehicle was owned by a heavy fellow who never had a passenger, and the springs on both ends have sagged over the ages. A competent shop with 4 load cells can point you in the right direction before you start throwing parts at it. YMMV, Glenn