PurePontiacKid Posted September 16, 2010 Report Share Posted September 16, 2010 What may sound like a really stiff spring is actually not that stiff. Because of the spring location on a 510, the wheel rate with a 1200# spring is actually only 300#. The spring rates that you are proposing running are crazy stiff. How much suspension travel does you car have anyway? The 650lb/in springs I plan on running in the front aren't that stiff, there's a guy in a Sentra SE-R that he DD's/AutoX's with 550lb springs already, and wants to go to 600 or 650lb, and we both have the same shocks, so that would be good for me. I've already got 450lb springs in the car. My car has as much suspension travel as far as the frame rails are off the ground haha (about 1.25") Quote Link to comment
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