Soft or hard spring
Safety Car
Joined: Sep 2010
Posts: 3,752
Likes: 190
From: Indiana PA
My club is loose on the rules, but if you read the scca book well it states that if tbe stock part is no longer available an equivalent replacement may be used. As for the rates. Twords tbe top of this post someone posted a full chart, it has all the rates but in n/mm. The vbp lists tbeirs in lbs. So you have to convert them, but yes the vbp are equal to the 94 z07. Th ones from ecklers, their sport ones equal the z51 springs
I posted the chart, FYI.
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Pro
Joined: Oct 2011
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I just reread the stock section and in the first part it talks about hardware and that if factory oem is not available then a equal non stock that meets oem standards is okay. For suspension again it permits use of aftermarket shocks as long as they are the same type as oem. No electronic shocks if they were not offered as stock. Suspension has to be the same style specs of thickness and hardness has to be used. The vbp are direct replacements same size shape thickness. They do not alter geometry and are the same spring rate as stock so I feel confident i am not cheating. Now if I went with ecklers sport springs i would be cheating as that rate was not offered in my year. Now if the z51 was offered in your year then go with ecklers. Same goes for the antisway bar they allow for different bars as long as the attachment is the same as stock
Thread Starter
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Joined: Oct 2011
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Now I will come clean on one thing my car came to me with 17 inch front wheels and 18 inch rear. Stock should have been 17 front and rear. This technically would bump me out of stock. But my club would not complain about that
