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opti vacuum lines

This is a discussion on opti vacuum lines within the LT1 forums, part of the Vehicle Specific category; Does any on know where the two vacuum lines coming from the opti go and how they are routed and ...

  1. #1
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    white
    96 ws6

    opti vacuum lines

    Does any on know where the two vacuum lines coming from the opti go and how they are routed and how long is the hose after that round plastic blue thing mine broke off?

  2. #2
    Dealing Powder ntimid8r7's Avatar
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    1994 Z28 MQBM
    2001 SS #1629 LPM

    the round plastic thing is a vacuum check valve. you may want to find a new one if you can. the vac lines for the opti just run to the side the nipples face and up to the intake elbow and one for the check valve that runs to the intake. I am not near my car right now so I cant help you with how long everything is. I am just going off memory.

  3. #3
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    white
    96 ws6

    Thanks man I think the one that goes to my intake was just hanging when I took my motor out, u think that could have lost me some power

  4. #4
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    white
    96 ws6

    Ok thanks for the help. But I have another one. On the passanger side of the intake, it has 2 lines coming out of it. I have a gray line and a black line coming from the back of the intake. Does anyone know what one goes on the top and witch one goes on the bottom? Any help would help me a great deal, I wish I still had my 94 to look off of.

  5. #5
    Dealing Powder ntimid8r7's Avatar
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    1994 Z28 MQBM
    2001 SS #1629 LPM

    when I get home I will send you a pic.

  6. #6
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    white
    96 ws6

    That would b awsome thanks a lot.

  7. #7
    Dealing Powder ntimid8r7's Avatar
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    1994 Z28 MQBM
    2001 SS #1629 LPM

    ok, the top line goes to the ac controls and the bottom one goes somewhere near the egr. those are for the ones on the pass side of the intake. sorry it took so long. i wasnt able to get any pics yet.
    Last edited by ntimid8r7; 03-25-2009 at 06:32 AM.
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