2008 Shelby GT500 Mustang-what Supercharger Pulley Size ?? - Ford Mustang Forum
 
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post #1 of 4 (permalink) Old 03-10-2010 Thread Starter
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2008 Shelby GT500 Mustang-what Supercharger Pulley Size ??

Peace and mercy of God be upon you

i have SHELBY GT500 2008 with Whipple 3.4 supercharger

its 733 rwhp at 18 psi and i want to add more boost up to 24 psi

do you know what pulley size required and did i have to change something from Under pulleys

thanks



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post #2 of 4 (permalink) Old 03-10-2010
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Sorry should u go with?or what u have stock?


Chris Centrella
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post #3 of 4 (permalink) Old 03-10-2010
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If you add more boost you will NOT be able to run 93 octane anymore. Your at the border right now with 18lbs of boost. Want to tell you that right up front. With my 3.5 inch pulley I'm pulling about 23lbs of boost but it's racing fuel only. I also have a Innovators West 10% OD Pulley on there. If you add these I would not try to spray it or anything. It's pretty much maxed out without a bottom end build. I'm assuming you have a one piece driveshaft on there all ready since the stock 2 piece is not really rated for more than 500HP. You can check out our forum on here if you'd like and see the thread on my mod list to get an idea. I'd need to know more about all your mods you have done on your car to get a true idea of what you have going on. Hope this helps some.

Shellee Kallas
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post #4 of 4 (permalink) Old 03-15-2010
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i have a question. the new 2011 is the same engine only aluminum. if it needs more power should i put on the ford blower or mess around with the pulley and tune first, would rather have an expert do the tuning unless its easy.i am fairly talented at cars but a little gun shy with a brand new engine
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