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  1. #1

    Default 1973 firebird vacuum lines

    What would be best resource for finding vacuum line schematic and routing around engine. I have 1973 Pontiac service manual but unable to find for firebird application or maybe I have over looked it.

  2. #2
    Join Date
    Oct 2008
    Location
    Portland In
    Posts
    781

    Default

    Normally the OE Service manual has a diagram with color codes in the fuel section.

    Unless it's an OEM undehood sticker it doesn't get any better than that.

    Mike

  3. #3

    Default 73 lines on a duty:)

    Let me know if there is anything else you need ?
    I do have a drawing some where but forgot where
    Brew
    Attached Images Attached Images

  4. #4
    Join Date
    Nov 2008
    Location
    Southeast MI
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    100

    Default

    Quote Originally Posted by suprduty View Post
    What would be best resource for finding vacuum line schematic and routing around engine. I have 1973 Pontiac service manual but unable to find for firebird application or maybe I have over looked it.

    If your service manual is for all makes of '73 Pontiacs, like my '72 shop manual is, then look for the "F" series diagrams. "A" series is the Lemans/GTO, "B" is the full size Catalina/Bonneville, "F" is the Firebird/Trans Am/Formula, "X" is the Ventura. The one-letter body designations were GM's old way of designating family or class of cars.

    So "F" body would apply to both the Camaro and Firebird for example.

  5. #5
    Join Date
    Oct 2008
    Location
    Portland In
    Posts
    781

    Default

    Quote Originally Posted by frosty View Post

    So "F" body would apply to both the Camaro and Firebird for example.
    Actually, in the engine Dept, F will only apply to Firebird in the Pontiac serice manual. Pre 1977 Cars were brand specific to engines unless it has an inline 6.

    Mike

  6. #6
    Join Date
    Nov 2008
    Location
    Southeast MI
    Posts
    100

    Default

    Agreed. It stands to reason that "F" in a Pontiac shop manual would only refer to the Firebird line. The Camaro was is clearly the Firebird's platform mate from Chevrolet.

  7. #7

    Default

    Thanks for pic, I was all over the place on this and forgot I posted this till now, I found a couple of other things to help me out along with your pic., emissions manuals that I purchased on ebay along with diagram in service manual. Some of the info is for early 73 cars and I think SD cars were all late builds because of emissions certifications. So I will have to sort through it to find the correct info, for instance sol. in your pic above SD valve cover sticker is shown with small foam filter (search ebay for SD455 and a listing for filter come up) and some of the diagrams are shown like yours. I think a some info from POCI library might help. At this time in the 70's GM was starting to incorporate emissions controls on pontiac engines
    Thanks for help
    Eric

  8. #8
    TININDN Guest

    Default

    Eric:

    Here's another source for you -

    http://peterschoon.com/superduty.html

  9. #9

    Default

    My cars are made in June and thats not late at all for production

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