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years with the 500 caddy

Discussion in 'The Garage' started by big_truxx, Nov 23, 2004.

  1. big_truxx

    big_truxx 1/2 ton status

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    caddy 472/500 info

    what years did the caddy run the 500?
     
    Last edited: Dec 9, 2004
  2. diesel4me

    diesel4me 1 ton status Premium Member

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    I think it ran from 1970-1976--the eldorado FWD caddy's all had the 500,some of the others could have the 472 motor,but I'm not sure what year the 472 stopped.(I'm thinking 1972,but I could be wrong)-You will find any caddy info you need at www.500cid.com -they have a message board and can answer many questions like this one.I hope to put the 76 500 have in my shed to use someday soon before it turns into a POS!--its been sitting for about 5 years now.I'd have put it in one of my trucks already if I didnt have to change the oilpan--the rear sump pan from an eldorado is needed to stuff it in a chevy truck--none left around here in the junkyards,so I'm hoping Moroso or Mildoon will start making a conversion oilpan so I wont have to go with a rusty used one. /forums/images/graemlins/crazy.gif
     
  3. walla2k5

    walla2k5 1/2 ton status

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    I'm pretty sure all '76 had 500's /forums/images/graemlins/usaflag.gif
     
  4. afroman006

    afroman006 1/2 ton status

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    I have a 76 Sedan DeVille. Any idea on what engine is in it?
     
  5. dhdescender

    dhdescender 1/2 ton status

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    Usually says on a tag on the rad support.

    My 472 is a 1974
     
  6. James670X

    James670X 1/2 ton status

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    The 1970 500 Cad is the engine you want (I believe it came in the Eldorado?), as it's rated at 400hp and 550lb.-ft.
     
  7. atho

    atho 1/2 ton status

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    didnt the '76 models have EFI?
     
  8. afroman006

    afroman006 1/2 ton status

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    No, its carb'd. The carb is MIA, this car is in perfect condition and all original except its missing the damn carb. I have searched high and low all over my 6000 sq. ft. shop and cannot find the damn thing anywhere. What kind of carbs did these things have and what do they look like?
     
  9. BigBadCad

    BigBadCad 1/2 ton status

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    1968-1976...the torque and HP figures significantly changed somewhere along the line but from what I understand this was due to the method of measurment rather than an notable power decrease. All I know is the 500 does a nice job of pinning you to the seat when you stomp on the skinny pedal. I started tearing apart another greasy pig last night...another 500 out of a 76'...I can't wait to see what the inside looks like.
     
  10. BigBadCad

    BigBadCad 1/2 ton status

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    You need the carb I just took off last night? I really dont need it and dont know what I'm planning on doing with it. It probably could use a rebuild since I've never heard it running.
     
  11. dhdescender

    dhdescender 1/2 ton status

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    Most of them are Q-jets.
     
  12. diesel4me

    diesel4me 1 ton status Premium Member

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    The 76 500 I have had a Q-jet--they do list an injected version in my chiltons book,but I havent seen any yet--I have seen the injection on 77 and up 368 and some 425 motors in the junkyards.Mine had no carb,but a friend gave me one off a 78 425 that should work ok--if I ever get the motor into something!!. /forums/images/graemlins/crazy.gif
     
  13. boz42

    boz42 1/2 ton status GMOTM Winner

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    68-69 eldorados = 472
    70-76 eldorados = 500
    68-74 all other cadddy's = 472
    75-76 all caddy's = 500
     
  14. big_truxx

    big_truxx 1/2 ton status

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    does anyone know the hp/tq specs on the 500 caddy?
     
  15. 3 on the tree

    3 on the tree 1/2 ton status

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    I saw a TBI 500 Eldo in a junkyard years ago, almost bought it ($200) to put in my 70 Burb, but wife nixed the idea.I am pretty sure it was a 76 model, but I never wrote anything down, just remember looking at the sticker under the hood.
     
  16. BranndonC

    BranndonC 3/4 ton status

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    stock i think it was 300hp and 500 tq, i'll find the article later, its a PDF
     
  17. unclematty

    unclematty 1/2 ton status

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    [ QUOTE ]
    68-69 eldorados = 472
    70-76 eldorados = 500
    68-74 all other cadddy's = 472
    75-76 all caddy's = 500

    [/ QUOTE ]
    what the man said! /forums/images/graemlins/waytogo.gif
     
  18. big_truxx

    big_truxx 1/2 ton status

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    thanks id really apreciate any help on hp and tq specs.
     
  19. BranndonC

    BranndonC 3/4 ton status

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  20. diesel4me

    diesel4me 1 ton status Premium Member

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    Dont go by the listings for tourque and HP in the books--my 76 500 is only rated at 235 hp and 365 ft lbs of tourque--but the "seat of my pants" dyno says its grossly underrated!
    Its due to the way they measure it--after 1972 they changed the ratings,taking a reading from the tranny output shaft,with all accesories installed and operating--the older specs were measured at the flywheel on a dyno,with no acessories on it.The "old" ones were rated at 360 hp and 510 ft lbs of tourque,and they did have higher compression ratios,but the "low performance" smog motors will still stain your underwear if your not careful!--and they arent as fussy for high octane fuel as the older ones. /forums/images/graemlins/crazy.gif
     

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