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SVT Shelby GT500
4.0 Whipple pulley size
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<blockquote data-quote="JimIII@jdm" data-source="post: 16241551" data-attributes="member: 10902"><p>Same combination we run on Cobra Jet Mustangs they make about 25-26 psi. Factoring they run open headers but sport 10:1 compression. You should be somewhere close to that still. My opinion, it's a TON of boost for pump gas. I would only run that much on race fuel or E85. Otherwise I would get a STOCK size ATI balancer ring and replace your 15% with that until your running better quality fuel.</p></blockquote><p></p>
[QUOTE="JimIII@jdm, post: 16241551, member: 10902"] Same combination we run on Cobra Jet Mustangs they make about 25-26 psi. Factoring they run open headers but sport 10:1 compression. You should be somewhere close to that still. My opinion, it's a TON of boost for pump gas. I would only run that much on race fuel or E85. Otherwise I would get a STOCK size ATI balancer ring and replace your 15% with that until your running better quality fuel. [/QUOTE]
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SVT Shelby GT500
4.0 Whipple pulley size
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