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SVT Shelby GT500
Suspension Advice? - 2007 GT500 - Front end feels 'light' at 90mph+
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<blockquote data-quote="xblitzkriegx" data-source="post: 16721748" data-attributes="member: 105608"><p>Go get your car realigned. That shop most likely did a "toe n go", where they only actually check/change toe angle and send it out the door as long as the rest of it is "close enough".</p><p></p><p>Your caster is definitely out of range, off nearly a full degree. That should be enough to notice and could be what you're feeling at speed.</p><p></p><p>The camber is off but the total amount and differential isn't enough to matter on the street. It's actually in range but still, it shouldn't be more than a tenth or two off at most considering the age of the car/components. You got a shitty alignment by a lazy tech, incompetent tech, or both. If the parts wouldn't allow for enough range, a good tech would've informed you regardless of it being a performance shop or not.</p><p></p><p></p><p>Factory specs are pretty good but allow for WAY too much variation. Here's the specs:</p><p></p><p>Camber</p><p>-0.75°, with a 0.75° cross camber tolerance</p><p></p><p>Caster</p><p>7.1°, with a 0.75° cross caster tolerance</p><p></p><p>Toe</p><p>0.10 total toe with a +/- 0.20 tolerance</p><p></p><p>OEM alignment is just fine for a lowered car, the trick is to have the adjustability to get back to stock settings. Toe will be the most important (most negative effect) on a lowered car, then camber, then caster. Have the alignment shop adjust everything to OEM except camber. Tell them to get - 1.2° to -1.4° camber, or as much as they can get and still keep it even. It'll drive like factory and will give you better tire wear if you drive aggressively on the street. If you wear white new balances, tuck a polo shirt in to your jorts, and wear a belt, set the camber to -0.75° as you won't be the kind of guy that will benefit from increased camber.</p></blockquote><p></p>
[QUOTE="xblitzkriegx, post: 16721748, member: 105608"] Go get your car realigned. That shop most likely did a "toe n go", where they only actually check/change toe angle and send it out the door as long as the rest of it is "close enough". Your caster is definitely out of range, off nearly a full degree. That should be enough to notice and could be what you're feeling at speed. The camber is off but the total amount and differential isn't enough to matter on the street. It's actually in range but still, it shouldn't be more than a tenth or two off at most considering the age of the car/components. You got a shitty alignment by a lazy tech, incompetent tech, or both. If the parts wouldn't allow for enough range, a good tech would've informed you regardless of it being a performance shop or not. Factory specs are pretty good but allow for WAY too much variation. Here's the specs: Camber -0.75°, with a 0.75° cross camber tolerance Caster 7.1°, with a 0.75° cross caster tolerance Toe 0.10 total toe with a +/- 0.20 tolerance OEM alignment is just fine for a lowered car, the trick is to have the adjustability to get back to stock settings. Toe will be the most important (most negative effect) on a lowered car, then camber, then caster. Have the alignment shop adjust everything to OEM except camber. Tell them to get - 1.2° to -1.4° camber, or as much as they can get and still keep it even. It'll drive like factory and will give you better tire wear if you drive aggressively on the street. If you wear white new balances, tuck a polo shirt in to your jorts, and wear a belt, set the camber to -0.75° as you won't be the kind of guy that will benefit from increased camber. [/QUOTE]
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SVT Shelby GT500
Suspension Advice? - 2007 GT500 - Front end feels 'light' at 90mph+
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