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Kooks 1 7/8"

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Old 01-05-2007, 11:25 AM
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Default Kooks 1 7/8"

I recently bought a set of kooks 1 7/8" race version headers and ory. My setup currently is 346" 7 psi procharger. Im NOT gonna do a stroker maybe a 370 down the road. With the headers comes 10psi, fast 90/90, etc. etc. but are these headers gonna be to large or will they be ok?
Old 01-05-2007, 11:31 AM
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They should be just fine. On a blown motor the less exhaust restriction the better.
Old 01-05-2007, 03:47 PM
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Thanks for reply. Anyone else got anything to say?
Old 01-05-2007, 03:53 PM
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Good choice, they should work very well for your application.
Old 01-05-2007, 04:55 PM
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I'd stay away from a FAST90 if you're planning on running a lot of boost. Stock LS6 or a ported LS2, as the FAST doesn't like to stay together under high boost conditions.
Old 01-07-2007, 08:01 AM
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Is 10 lbs to high for a fast?
Old 01-07-2007, 08:24 AM
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Im running KOOKS 1 7/8 with catted Y and GMMG and noticed no bottom end loss on a N/A lid only car. I am about to juice it though so they should help it exhale a bit better then when i eventually go with a big cam it will help even more. From what it sounds like he is saying that constant boost at ny level is not great for a FAST




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