I'll repost here when I find it, but it's here somewhere. Try extremes31 ? Maybe as a search word. He did a ton of research on this 3 years ago and put all of the available spring rates in a post. FWIR though the above rate you have for the Eibachs sounds really light. I thought stock rates were close to that and Eiback was around 325 F 185 RDoes anyone know the rates of our stock springs, Racing Beat, and/or H&R?
I found the Eibach rates in an old post...
Front - 137 lbs/in (24N) linear
Rear - 77/114 lbs/in (progressive)
1.2" drop front and rear.
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