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Full Throttle Growling

This is a discussion on Full Throttle Growling within the General Help forums, part of the LSx Technical Help Section category; Alright, I got a question. When I go under full throttle and it is reving at about 3500. Behind the ...

  1. #1
    Member 98Z-28Camaro's Avatar
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    1998 Z-28 Camaro

    Full Throttle Growling

    Alright, I got a question. When I go under full throttle and it is reving at about 3500. Behind the front seats there is a growling noise. It starts at the back of the seats and the higher it revs it slowly shifting farther back. I have had the rearend rebuilt twice and is silent at all speeds. I have a flowmaster muffler and cat cut outs. Any advice?

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    Boosted Foolz
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    BlAcK
    1998 FiReBiRd FoRmUlA

    exhaust leak? maybe ur cutouts are leaking

  3. #3
    Crinkle, Crinkle
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    2001 Camaro SS

    Exhaust pipe touching the body under load, most likely.

    --97T--

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    Senior Member MadSeason's Avatar
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    might be because the cats are gutted, just get rid of them

  5. #5
    Member 98Z-28Camaro's Avatar
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    Ok, never thought of the exhaust rubbing. Thank you for ya'lls help. I appreciate it.

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