Vacuum block on firewall

Discussion in 'Technical' started by PAINTANK, Sep 9, 2007.

  1. PAINTANK

    PAINTANK Cometosis Obsessivus

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    Is this thing really necessary?

    One fat line in from back of tranny/fat line out to doohicky on intake.
    Narrow line in from back of tranny/narrow line out to "T" connection on another hose.

    Can't I just bypass this semingly useless and redundant vacuum block? Can't I just run the big line straight to the doohicky on my manifold and the narrow line right to the "T" splice?
     
    PAINTANK, Sep 9, 2007
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  2. don graham

    don graham MCG State Rep

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    i've only got 1 line from the modulator on the tranny to the vacuum at the base of the carb. don't know if the modulators are interchangable at all.:)
     
    don graham, Sep 9, 2007
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  3. PAINTANK

    PAINTANK Cometosis Obsessivus

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    Okay. Then what is the vacuum block on the firewall for?
     
    PAINTANK, Sep 9, 2007
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  4. mashori

    mashori Member

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    you have a picture? It sounds like you may have some redundant vac lines coming and going.
     
    mashori, Sep 11, 2007
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  5. MNTony

    MNTony aka Godzirra

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    A dual vacuum modulator? I wonder what that would accomplish? Makes ya go hmmmm???
     
    MNTony, Sep 11, 2007
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  6. fan2488

    fan2488 Member

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    before i changed my intake mine was all hooked up. now i dont have anything going to it. i think i have a vaccum diagram. i will look if you need it.
     
    fan2488, Sep 12, 2007
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  7. newtoford

    newtoford Member

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    the vac advance on the dizzy and the trany is all im using. and the PVC in the valve cover
     
    newtoford, Sep 12, 2007
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  8. Taxi Rob

    Taxi Rob Member

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    I bought mine with everything disconnected, and lots of lines capped/plugged, if you could scan and email it let me know!
     
    Taxi Rob, Sep 12, 2007
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  9. Rocco

    Rocco Member

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    Sure can.
     
    Rocco, Sep 12, 2007
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  10. fan2488

    fan2488 Member

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    i will take a look and see if i still have it.
     
    fan2488, Sep 12, 2007
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  11. PAINTANK

    PAINTANK Cometosis Obsessivus

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    [​IMG]
     
    PAINTANK, Sep 12, 2007
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  12. mashori

    mashori Member

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    ummm, my car doesn't have that!
     
    mashori, Sep 13, 2007
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  13. maverick1970

    maverick1970 MCG State Rep

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    It is just a vacuum manifold. Serves a vacuum signal to multiple items.
     
    maverick1970, Sep 13, 2007
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  14. mav72erick

    mav72erick New Member

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    vaccuum diagram

    i would also like to obtain your vaccuum diagram as well, i would like to sort out all the lines before cranking up my 72 mav. its a 302 if it makes any difference to you. thank you if you can help.
     
    mav72erick, Nov 16, 2011
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