~1976 500ci Vacuum Diagram~
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  • 1 Post By KatanaMasta
  • 1 Post By steelybill
500, 472, 425, 368 Discussion, ~1976 500ci Vacuum Diagram~ in Cadillac Engine Discussion; hey all, k, i just recently got into restoring groovy old cars, and i've got a 76 coupe deville off ...
  1. #1
    KatanaMasta's Avatar
    KatanaMasta is offline Cadillac Owners Member
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    Question~1976 500ci Vacuum Diagram~

    hey all,
    k, i just recently got into restoring groovy old cars, and i've got a 76 coupe deville off of which the PO has torn the majority of vacuum lines,, it is astounding the thing even runs, (and it purrrrz), but it overheats like mad, obviously,, soo, what i need is a vacuum line routing diagram for this year and engine (500ci 4BL),,, i know theres already posts on this topic, but i also know the routing changed slightly year to year, and i dont wanna take any chances,,,,,
    so if anyone could pleeaze help me it would be greatly appreciated,,
    thanks in advance!
    ~rory


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  3. #2
    SSG
    SSG is offline Cadillac Owners Member
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    Re: ~1976 500ci Vacuum Diagram~

    Vacuum lines won't make it over heat. Check thermostat or recore the radiator.

  4. #3
    KatanaMasta's Avatar
    KatanaMasta is offline Cadillac Owners Member
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    Re: ~1976 500ci Vacuum Diagram~

    yeah i know,, we've already replaced the tstat, radidiator, lower hose, water pump, etc,,
    all i need now is that infernal routing diagram,,,,

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  6. #4
    drmenard is offline Cadillac Owners Connoisseur
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    Re: ~1976 500ci Vacuum Diagram~

    Did your car overheat before you changed the thermostat? Those year caddy thermostats have a piece at the bottom that fit in the block and if you use the wrong one it overheats..so make sure you have the right thermostat and some parts guy sold you the wrong one...

  7. #5
    KatanaMasta's Avatar
    KatanaMasta is offline Cadillac Owners Member
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    Re: ~1976 500ci Vacuum Diagram~

    we havent started it yet to see if it'll overheat again,, we got the tstat at checker and they say its the right one for make model and year,, however, if u have a pic of that lil piece ur talkin about that would be cool,, just so i could be sure,,,

    annnnnd, if u have a vacuum diagram, that would be STUPENDOUS,,,,

  8. #6
    steelybill is offline Cadillac Owners Enthusiast
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    Re: ~1976 500ci Vacuum Diagram~

    I can email that diagram as it's connected to the carb. I would need your email address to do it, since I'm not able to post it. You could PM me your address. Don't post e-mails here.

    BILL

  9. #7
    KatanaMasta's Avatar
    KatanaMasta is offline Cadillac Owners Member
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    Cool

    well thanks abunch man! will do so,,

    blaah, still too new on here ta PM

    thanks agin!

    yep got it,,, thanks soooooo much!!


    behold, the elusive, infernal routing diagram!!
    send a thanx ta Steely Bill!!

    the APEMAN likes this.

  10. #8
    steelybill is offline Cadillac Owners Enthusiast
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    Re: ~1976 500ci Vacuum Diagram~

    You are welcome. That is from my '76 Deville manual, so it should be the correct diagram.
    the APEMAN likes this.

  11. #9
    caddy1976 is offline Cadillac Owners Member
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    Re: ~1976 500ci Vacuum Diagram~

    Steely bill,

    Could you please send the diagram as well to me

  12. #10
    drmenard is offline Cadillac Owners Connoisseur
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    Re: ~1976 500ci Vacuum Diagram~

    I have been sending that picture to people for over 10 years.. Now with this new computer I can't find that old email with the picture.. Would be great if one of the people I sent it to could send it to you.. If I can fire up a old laptop and maybe its still on there I'll send it to you... Good luck Dave

  13. #11
    the APEMAN is offline Cadillac Owners Enthusiast
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    Re: ~1976 500ci Vacuum Diagram~

    Whacked vac lines will not make a 500 overheat.

  14. #12
    wvcd is offline Cadillac Owners Member
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    Re: ~1976 500ci Vacuum Diagram~

    If anyone is able I would appreciate a copy of that vacuum diagram as well if possible.

  15. #13
    Designguy69 is offline Cadillac Owners Member
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    Re: ~1976 500ci Vacuum Diagram~

    I would appreciate a copy of the vacuum diagram also if willing. Thanks!

  16. #14
    Benji808 is offline Cadillac Owners Member
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    Re: ~1976 500ci Vacuum Diagram~

    Old thread, but if someone could send me the diagram, it would be much appreciated! benjaminMroach@gmail.com.

    Thank you!

  17. #15
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
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    Re: ~1976 500ci Vacuum Diagram~

    It's never a good idea to post your e-mail in a huge worldwide website. One reason that we have an internal PM system .........

    Start searching - type "1976 cadillac engine vacuum diagram images" into Google .......

    https://www.google.com/search?q=1976+cadillac+engine+vacuum+diagram+image s&biw=1093&bih=470&tbm=isch&tbo=u&source=univ&sa=X &ved=0ahUKEwiXl8THm8nQAhXK1IMKHQxiDMYQsAQIGg

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