Premium Member (Lifetime)
Join Date: Aug 2010
Location: Austin,Tx 2010 Z06Fest
Re: Stock leaf springs preload when lowered
I figured I'd have to explain this further. As you tighten or loosen the top bolt (rear), the tension on the spring changes. This spring is a "fast bump" spring, one you need on a race car. It pulls down on wheel and pushes up at it's center, at normal ride height, this spring is bent or preloaded x amount, but is changed with ride height.
There was a thread a while ago about a guy asking why his vette "washed out" in a turn after he lowered it. I don't know if he got an acceptable answer, most peeps talked about an alignment, but I believe it is becuz when you lower the car you soften the fast bump, and your tires will chatter or skip over uneven surfaces instead of staying planted.
I need to keep or even increase that deflection even though it's lowered, I can't figure how to do that.
It seems you have to go coil over to lower without affecting suspension performance.
Blk '02 z06
Last edited by zteve06; 11-09-2012 at 12:35 PM.