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SVT Shelby GT500
Lowering the rear end on a stock height 2010 SVT none PP
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<blockquote data-quote="Catmonkey" data-source="post: 16581367" data-attributes="member: 124025"><p>Bear in mind a lighter spring rate will compress more than a heavy spring rate given the same amount of weight carried, so you need to consider that as well. <a href="https://landrumspring.com/products/drag/barrel-spring/" target="_blank">Landrum springs</a> makes an 11" barrel spring and it is also available in a 185# spring (along with 175# and 200#). Each rear spring will be carrying roughly 600# of unsprung weight. Unsprung weight would be those components that are not supported by the spring. The entire rear axle, rotors, calipers, wheels and tires. In other words a 185# spring will compress 3.28" (600/185) vs. 3" for 200# spring (600/200). If you deduct those measurements from the unloaded spring length, that is your compressed spring length. The rolling radius of the tire is going to be something less than half the unloaded diameter of the tire, but comparing that measurement between two tire sized probably won't be that far off. I think you're reasoning above is sound. Let us know how it turns out.</p></blockquote><p></p>
[QUOTE="Catmonkey, post: 16581367, member: 124025"] Bear in mind a lighter spring rate will compress more than a heavy spring rate given the same amount of weight carried, so you need to consider that as well. [URL='https://landrumspring.com/products/drag/barrel-spring/']Landrum springs[/URL] makes an 11" barrel spring and it is also available in a 185# spring (along with 175# and 200#). Each rear spring will be carrying roughly 600# of unsprung weight. Unsprung weight would be those components that are not supported by the spring. The entire rear axle, rotors, calipers, wheels and tires. In other words a 185# spring will compress 3.28" (600/185) vs. 3" for 200# spring (600/200). If you deduct those measurements from the unloaded spring length, that is your compressed spring length. The rolling radius of the tire is going to be something less than half the unloaded diameter of the tire, but comparing that measurement between two tire sized probably won't be that far off. I think you're reasoning above is sound. Let us know how it turns out. [/QUOTE]
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Lowering the rear end on a stock height 2010 SVT none PP
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