Pro kit and Bilsteins
Wow, what an improvement in cornering and lane changes! Some of my routine driving includes a two lane with an S curve that slopes down hill. Before, the car felt like it would rolllllll to one side, then rolllll to the other side. The car now simply turns left, then right though the S curve. It want to take the S curve faster.
I checked to see how off center the axle was using the weighted string taped to the fender method. Amazingly there is only 1/8" difference.
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blackbird, If I were a 4 door Cadillac driver I would call it harsh. But being used to and enjoying these cars as we all do, I would describe it as a firm ride. I does not send every road ripple to the car seat, no teeth jarring.
I can tell already that there is some wondering why Wayne got what he got. You must realize that there is no one setup that is best for everyone!!!!!! That feeling exists because so many shops to that to people. I have preferences too, but listen and discuss with people to determine what suits what then want or need the best.
Yes, we went with LT1 spring here. Yes they are progressive, but it's a situation where numbers on paper and reality don't match up. The way the LT1 springs are wound, the "soft" end goes dead about any time the car is on the ground. It's nowhere near as progressive the numbers would seem them to make them. Ride height was a concern here, which was part of the equation also, as was some ride quality from what I can recall (Wayne, chime in if I have something wrong....).
Progressive springs are not impossible to damp, but are much harder to damp because the rate is always variable. Again, the LT1 Pro-kits are in reality less progressive dynamically than they appear on paper. Just look at the way the springs are wound. The minute you put weight on the fronts, 4 of the coils go dead which means they are out of play...... The remaining coils are spaced very equally and because of that aren't really too "progressive" anymore.
And BTW, the ability to use these springs also included the fact Wayne was willing to go Revalves to control them. They aren't soft, and need controlled. As you can tell from Wayne's comments, a fairly stiff spring and aggressive shock can ride pretty damn well PROVIDED THEY ARE SETUP RIGHT and matched by someone who has a clue.
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Results matter. Talk is cheap. We are miles beyond the success anyone else has had with the 4th gens, and C5, C6, C7 Corvettes,
10 SCCA Solo National Championships, 2008 Driver of they Year, 2012 Driver of Eminence
13 SCCA Pro Solo Nationals Championships
2023 UMI King of the Mountain Champion
Yesterday I drove down some of our 'washboard' downtown streets. These were the most continuosly rough stretches of pavement the car has seen with the new setup. Yes I could definately tell the combo was much firmer than stock. I could actually feel the suspension working. Never felt anything in the car seat. At a traffic light I was told the car looked 'bad ***'.

Thanks Sam!








