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Loud whistle/ 90mm fast

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Old 01-04-2006, 05:18 PM
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Default Loud whistle/ 90mm fast
Installed 90mm FAST and 90mm throttle body on 402 LS2 stroker and have noticed a very distinctive whistle. Is this an air leak?
Last edited by jw02; 01-04-2006 at 05:18 PM. Reason: typo
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Old 01-04-2006, 05:41 PM
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Originally Posted by jw02
Installed 90mm FAST and 90mm throttle body on 402 LS2 stroker and have noticed a very distinctive whistle. Is this an air leak?
If it's when the car is moving and not when the car is still- It's the space between the intake and the valley cover. The factory LS6 has a bit of foam to close off the gap.

Hope that helps.

Let me clarify, at speed the air passing between the intake and valley cover makes a "whistle."
Last edited by FIREHAWK#608; 01-04-2006 at 05:54 PM.
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Old 01-04-2006, 05:42 PM
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Could be a leak...I doubt it though. Feel around with your hand to see if you can feel the leak.

Otherwise you are fine.
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Old 01-04-2006, 06:32 PM
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As long as you roll around town saying "THE WHISTLES GO WOOOOOOOOOOOO", you'll be just fine
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Old 01-05-2006, 09:51 AM
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sneaky pete turbo?
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Old 01-05-2006, 09:53 AM
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My TPIS 90mm TB whistled. The intake was fine.
Sounded like I had a supercharger.
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Old 01-05-2006, 10:34 AM
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hell that whistle is probably scaring ppl!!!!! ib be happy with its sounding like a blower
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