will fit a 500 in a '67 eldorado
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500, 472, 425, 368 Discussion, will fit a 500 in a '67 eldorado in Cadillac Engine Technical Discussion; Hello, I have a '67 eldorado and the engine is gone up in smoke Now i have the plan to ...
  1. #1
    '67 eldorado is offline Cadillac Owners Member
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    will fit a 500 in a '67 eldorado

    Hello,

    I have a '67 eldorado
    and the engine is gone up in smoke

    Now i have the plan to put a 500 engine in this beauty
    Can anyone tell me what mods i have to do to make it fit?

    Grtz
    GP

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  3. #2
    '67 eldorado is offline Cadillac Owners Member
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    Re: will fit a 500 in a '67 eldorado

    Anyone?

  4. #3
    cadillac_al is offline Cadillac Owners Connoisseur
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    Re: will fit a 500 in a '67 eldorado

    I'm stumped and I'm surprised nobody else jumped in. I think this question has come up before and I think it was doable. Maybe the bump will get you some help.

  5. #4
    BRUCE ROE is offline Cadillac Owners Fanatic
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    Re: will fit a 500 in a '67 eldorado

    Your 1967 THM425 trans won't bolt up to a 472; 2 of the bolts are positioned wrong. However you could drill 2 new holes in the trans, or get a '68 up trans, or rebuild your 67 switch pitch trans internals into a newer case.

    If your 472 isn't from an Eldorado, you'll need Eldo oil pan, maybe oil pump,
    and exhaust manifolds. The 472 is a new design, expect details different.

    Accessories, you might need to use a 472/500 set, or at least brackets. Not sure about engine mounts, but they are similar.

    Bruce Roe CLC advisor, # 14630

  6. #5
    CadVetteStang's Avatar
    CadVetteStang is offline Cadillac Owners Fanatic
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    Re: will fit a 500 in a '67 eldorado

    It is a doable swap. Someone from my Caddy performance group did it. I’m not sure what mods are needed, but from the above reply, I would think that pulling the whole engine/tranny unit from a 70 up Eldo. I’m not sure if the 71-76 spindles are the same as 69 - 70, but while the engine is out, it would be a good time to do a disc break upgrade since the steel lines would need to be changed too. If you can find a 69 or 70 in salvage, then you can get everything you need and it should be a direct bolt on. They guy who did the swap said he also wants to eventually install a blower.

    Note: The exhaust outlets on the heads come out in the same location as the 460 Ford does (the engines were designed by the same man) so it is possible that 460 Ford headers could be found that would work in that body with modifications. The exhaust flange would have to be changed to get them to bolt to the Caddy block – but Caddy 500 performance shops sell those flanges as well as header gaskets. They may also know if anyone has found headers that will fit that body; when I get my 70 Eldo back on the road, I will be looking for headers – but they may have to be custom built for it.

    ~Good look with the car, and don’t let me talk you into too many upgrades at one time- it is better to finish it one mod at a time and drive it than to tackle too many projects at one and wind up with a basket-case that sits in the garage for two years.

  7. #6
    BRUCE ROE is offline Cadillac Owners Fanatic
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    Re: will fit a 500 in a '67 eldorado

    Getting a 68-78 complete drive train will supply all the parts you need. The trans will no longer be switch pitch. The later final drive will be A 3.07 or 2.73 ratio, instead of the early 3.21:1.

    Headers are a real problem on these cars, because the trans gets in the way on the drivers' side. Bruce Roe

  8. #7
    70eldo's Avatar
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    Re: will fit a 500 in a '67 eldorado

    Quote Originally Posted by '67 eldorado View Post
    Hello,

    I have a '67 eldorado
    and the engine is gone up in smoke

    Now i have the plan to put a 500 engine in this beauty
    Can anyone tell me what mods i have to do to make it fit?

    Grtz
    GP
    Hey buddy!
    I can hook you up with some people who can help you in Holland. Send me a PM.

  9. #8
    '67 eldorado is offline Cadillac Owners Member
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    Smile Re: will fit a 500 in a '67 eldorado

    Well i'm in the middle of the engine swap
    I got the motor and tranny from a '72 eldorado.

    The good news is...it's in the car

  10. #9
    '67 eldorado is offline Cadillac Owners Member
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    Re: will fit a 500 in a '67 eldorado

    the bad news is the oilfilter (ac delco) is not free from a steering bracket

    It's a complete swap from the '72 eldo
    including brackets and motormounts.

    Do i need other motor brackets or will i have to cut of a piece from the steering bracket?

    Has anyone delt with this problem?

    Hope you guys can help me

    grtz
    '67 eldorado
    from holland

  11. #10
    BRUCE ROE is offline Cadillac Owners Fanatic
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    Re: will fit a 500 in a '67 eldorado

    There are several oil filter mounts for 68-78 engines, that move the exact position of the oil filter. However, I'm surprised the 72 Eldo engine setup has a problem. Getting a different filter mount might fix it if you have access to some. Or an oil filter relocating kit could be a fast fix. If it was just an interfering bracket, I would look at modifying it, but not any moving parts. Some later oil filters are smaller, would that help? Is the car right hand drive? Might need a picture here to understand exactly the problem. Bruce Roe CLC # 14630

  12. #11
    '67 eldorado is offline Cadillac Owners Member
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    Re: will fit a 500 in a '67 eldorado

    'the car is a left hand drive ('72 also)

    A smaller filter would help
    I'll try to make some pictures this week of the problem en post it here

    thnx for the quick response

    grtz
    '67 eldorado

  13. #12
    BRUCE ROE is offline Cadillac Owners Fanatic
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    Re: will fit a 500 in a '67 eldorado

    If you don't have a place to post the picture, send me a copy at bcroe@juno.com Bruce Roe

  14. #13
    steelybill is offline Cadillac Owners Enthusiast
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    Re: will fit a 500 in a '67 eldorado

    There are oil pumps available that tilt the filter can down, which may help. The Cad Co. has them, and I have one on a 500 that's going in a Chevy.

  15. #14
    70eldo's Avatar
    70eldo is offline Cadillac Owners Connoisseur
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    Re: will fit a 500 in a '67 eldorado

    '67 Eldorado,

    check out http://www.katella.nl/
    He works on Eldorado's and is a member of the Cadillac Club Nederland. He will be able to help you out with parts as well.

  16. #15
    '67 eldorado is offline Cadillac Owners Member
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    Re: will fit a 500 in a '67 eldorado

    I've posted some pictures of the situation in my photo album
    so you guy's can have a look of what's my "problem"

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