Quote:
Originally Posted by BOSSman760
I installed the ebach pro springs on my 2017 ss 1LE and I hate it, its so bouncy and embarrasing and looks ridicules the way it bounces. These must be some cheap low quality springs, now i need to look for better springs or put back my OEM ones.
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They are bouncy because any large deviation from OE ride height will put any of the rubber bushings into a state of bind...this is often overlooked on any drop spring install on any vehicle. The SS 1LE has rubber bushings at the front radius rod and various rear joints. But I believe the biggest impact here is the bonded anti roll bar mounting bushings. One cannot retime the front bushings because they are actually glued to the bar. At the rear, the bar mounting bushings grip the bar super tight, but you can remove and retime the them. On the surface this seems easy enough but GM engineered some preload into both bars. If you can't mimic the preload, you're gonna change the dynamics of everything. Some may notice, others may not. YMMV.
Some of our joints are shperical ball rose joints. They are not affected by static ride height changes. Bind free precision movment. Perfect joints.
This bind effectively changes the OE calculated wheel rate for which the struts and shocks are tuned for. This is the rate or "stiffness" of all the suspension components that the wheel or more correctly what the tire is seeing, not just the springs and bars. Joints are part of the wheel rate. This bind is uncontrolled, undampened.