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PCV crap

This is a discussion on PCV crap within the General Help forums, part of the LSx Technical Help Section category; So i just pretty much ripped my pcv lines and i would rather go a different route then just getting ...

  1. #1
    Member zeetwentyeight's Avatar
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    PCV crap

    So i just pretty much ripped my pcv lines and i would rather go a different route then just getting new lines and fixing it to stock.
    can i just block everything off? Do i need breathers on every port or what? what can i do to stop the pcv system? i need a quick fix this is a daily driver.

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    Catch can is the simplest fix. You technically could just vent the engine with a valve cover breather, but the EPA isn't real fond of that solution and it does nothing to draw the blowby gases out of the engine.

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    have you considered a LS6 valley cover?

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    Moderator Cutlass's Avatar
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    You definitely can't just block everything off. That'll just build pressure in the crankcase and make every gasket blow out and leak oil . A simple breather or two should sort of work. And a well design PCV setup is even better.

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    Spaz is My Mentor SMWS6TA's Avatar
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    Quote Originally Posted by sjsingle1 View Post
    have you considered a LS6 valley cover?
    This plus catch can

  6. #6
    Member zeetwentyeight's Avatar
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    just did two breathers on each valve cover and blocked the rest off. what is the ls6 valley cover?

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    Spaz is My Mentor SMWS6TA's Avatar
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    Read this, it will explain it.

    Explaination of OEM PCV vs LS6 VCT Mod


    Both of these are good references in how to do the mod:

    LS6 valley cover in pics


    LS1Howto.com



    And the best thing is that doing the LS6 VCT is cheaper* then replacing the OEM PCV setup.


    * - minus the catch can, knock sensors, wire harness & OPSU that are reference in the top thread. They are not require to buy unless you break 'em while doing the mod.
    Last edited by SMWS6TA; 10-14-2011 at 09:34 AM.

  8. #8
    Member zeetwentyeight's Avatar
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    Thanks! that helps alot when i got some extra cash and while its sitting over the winter ill get something done with is

  9. #9
    Spaz is My Mentor SMWS6TA's Avatar
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    98 T/A w/a little mods...

    If you are considering a LS6 intake in your future, I would combine all of these into one project so that you don't have to do the work multiple times.

    I see you are a 98 like me. In one of those threads I believe I address the knock sensor and wire harness upgrades to a 99<. Reason being is that they no longer make >98 KS & WH. Yes you can still get them that are in stock, but they are slowly being phased out.

    The 99< are a better KS and the WH is plug & play.


    When you take the LS1 VCT off you have to remove the KS anyways. Most likely they need to be replaced because of mileage and yrs so go ahead and do the upgrade.



    Many of us on here have done the mod and like it a lot, some don't and stick with the OEM PCV system.


    Any questions feel free to ask.

  10. #10
    Member zeetwentyeight's Avatar
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    im definatly interested in doing a ls6 manifold im having a hard time finding a tuner i want to work on my car around here though. but car is getting stored in less than a month and ill just save up for all of this ls6 and all to knock it all out and ill deal with a tuner next spring

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    Junior Member BIGGDADDYWIGGS's Avatar
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    You can get a peice of Heater Hose and fix that with. The PCV will fit into the enof the hose and just clamp it. when mine broke all kinds of Fumes were getting into my car.

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    Quote Originally Posted by zeetwentyeight View Post
    im definatly interested in doing a ls6 manifold im having a hard time finding a tuner i want to work on my car around here though. but car is getting stored in less than a month and ill just save up for all of this ls6 and all to knock it all out and ill deal with a tuner next spring

    Mail order tune from Frost is highly recommended. Just be sure to list all your mods on the data sheet.

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