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new valve springs?

This is a discussion on new valve springs? within the External Engine forums, part of the LSx Technical Help Section category; i was wondering if anybody knew what size vavle springs i need to replace my old ones and what brand ...

  1. #1
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    2002 Pontiac Trans Am

    new valve springs?

    i was wondering if anybody knew what size vavle springs i need to replace my old ones and what brand you recommend? i have an 02 trans am with no internal mods.

  2. #2
    Slow'er'Ass Mr. Luos's Avatar
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    If you plan on keeping the internals stock...

    Go with stock valvesprings.
    Why do you think you need to replace them? One break?

  3. #3
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    it sounds like the #7 cylinder is knocking a valve spring. my brother in law who owned it before me recommended going with a stiffer spring saying the stock wasn't stiff enough. i plan on upgrading parts to fix it up too. we did a compression test and the cylinder matched all the other cylinders so i was thinking of going with the springs.

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    member since may 2000 nhraformula's Avatar
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    Quote Originally Posted by jessica View Post
    it sounds like the #7 cylinder is knocking a valve spring. my brother in law who owned it before me recommended going with a stiffer spring saying the stock wasn't stiff enough. i plan on upgrading parts to fix it up too. we did a compression test and the cylinder matched all the other cylinders so i was thinking of going with the springs.
    does it have a aftermarket cam?

  5. #5
    member since may 2000 nhraformula's Avatar
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    http://www.thunderracing.com/catalog...vid=3&pcid=109

    198-8401 Patriot Performance Dual "Gold" Valve Spring Kit - inlcudes titanium retainers, Super 7 locks, machined bases, and Viton valve seals (max lift .650")
    $255.00

    i have above.

  6. #6
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    No aftermarket cam

  7. #7
    Slow'er'Ass Mr. Luos's Avatar
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    Quote Originally Posted by jessica View Post
    No aftermarket cam
    Stock valvesprings then.
    Although I would make sure that is the problem.

    Could just be a bent pushrod.

  8. #8
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    cool i'll check it out then thanks. can you lead me in the right direction to a set of pushrods or springs depending on which i have to go with.

  9. #9
    Slow'er'Ass Mr. Luos's Avatar
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    Your local GM dealership.
    Or Fred Beans, an LS1.com sponsor. They do stock GM parts at just over wholesale plus shipping.

    http://www.trademotion.com/partlocat...?siteid=214152

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