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SVT Shelby GT500
drag racing suspension
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<blockquote data-quote="UnleashedBeast" data-source="post: 11321507" data-attributes="member: 112023"><p>From what I have read, the new CJ springs M-5300-R are not suitable for a street car. They lower the car too low to clear simple speed bumps and inclines. Everyone on different forums that have tried them on street/strip cars, removed them in short time, and sold them. </p><p></p><p>rw95gt, </p><p></p><p>I decided to give adjustable Strange shocks a try. Bang for the buck, they are a bit cheaper than the Tokico, but with a little more flexibility so I have read.</p><p></p><p>I too have heard wonders about the CJ springs, but I just do not like the extreme rake they give the GT500. I decided to experiment. </p><p></p><p>My thoughts, use the CJ front springs, they are actually "SFF Yellow Tag" GT premium front springs (I have two pair, willing to sell you a pair). In the rear, try some QA1 2.5" rear coils. You have two choices. </p><p></p><p>1. Use their 14-150 spring, but this will give you the same rake like the CJ rears unless you cut a coil off. *Not fond of cutting coils*</p><p></p><p>2. Use their 12-150 spring with an adjustable perch. The 12" spring alone may lower the car too much in the rear, hence the adjustable perch. </p><p></p><p>*QA1's above are 150 pound/inch springs* For comparison sake, the CJ rear springs are 14" free height and 142 pound/inch rated. The coil design of the rear Ford CJ spring suggest that they are not linear. They look like a progressive rate design to me. </p><p></p><p>I can tell you that the Steeda competition springs in the rear of my car are 12" tall free height, linear 185 pound/inch rate. It lowers the rear of my car perfectly even at only 12" due to the higher rate. Perfect for corner carving, not so much for drag racing. </p><p></p><p>If QA1 had a 12.5-150, it would be perfect for a 28" rear drag radial setup.</p></blockquote><p></p>
[QUOTE="UnleashedBeast, post: 11321507, member: 112023"] From what I have read, the new CJ springs M-5300-R are not suitable for a street car. They lower the car too low to clear simple speed bumps and inclines. Everyone on different forums that have tried them on street/strip cars, removed them in short time, and sold them. rw95gt, I decided to give adjustable Strange shocks a try. Bang for the buck, they are a bit cheaper than the Tokico, but with a little more flexibility so I have read. I too have heard wonders about the CJ springs, but I just do not like the extreme rake they give the GT500. I decided to experiment. My thoughts, use the CJ front springs, they are actually "SFF Yellow Tag" GT premium front springs (I have two pair, willing to sell you a pair). In the rear, try some QA1 2.5" rear coils. You have two choices. 1. Use their 14-150 spring, but this will give you the same rake like the CJ rears unless you cut a coil off. *Not fond of cutting coils* 2. Use their 12-150 spring with an adjustable perch. The 12" spring alone may lower the car too much in the rear, hence the adjustable perch. *QA1's above are 150 pound/inch springs* For comparison sake, the CJ rear springs are 14" free height and 142 pound/inch rated. The coil design of the rear Ford CJ spring suggest that they are not linear. They look like a progressive rate design to me. I can tell you that the Steeda competition springs in the rear of my car are 12" tall free height, linear 185 pound/inch rate. It lowers the rear of my car perfectly even at only 12" due to the higher rate. Perfect for corner carving, not so much for drag racing. If QA1 had a 12.5-150, it would be perfect for a 28" rear drag radial setup. [/QUOTE]
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