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500, 472, 425, 368 Discussion, MPG-Crate Engine in Cadillac Engine Technical Discussion; I love ebay...
  1. #16
    WWII is offline Cadillac Owners Member
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    Re: MPG-Crate Engine

    I love ebay

  2. #17
    WWII is offline Cadillac Owners Member
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    Re: MPG-Crate Engine

    OK, well, the car is mine. It just has to be shipped from Nevada. Here are the first things I'm gonna do to it
    *Headers with 3in(?) dual exhaust to open it up a bit
    *Aluminum intake-most likely edelbrock
    .....I heard there was some bracket or a compressor that would fit on this????
    *Rebuilt Q-Jet
    After all this is done, it'll probably be awhile for me to mess with the lower end. I'd prefer to get an engine core and work on that in the garage for my '71. What size heads came on the '71 472? Just wondering. Here are some pics of the 1976 I just bought. What a beauty....
    Attached Images

  3. #18
    davesdeville's Avatar
    davesdeville is offline Banned
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    Re: MPG-Crate Engine

    71 engine will have 76cc heads. Might want to consider modifying the stock intake before you spend $250 on an Edelbrock. Beautiful car.

  4. #19
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    Re: MPG-Crate Engine

    Great looking car. Isn't there some way you can get an A/C compressor on the Edelbrock? Some small one with a custom back bracket or something like that? I am almost certain it was discussed on here nto too long ago. I'm just curious. In my opinion you should definitly modify the stock intake.

  5. #20
    BluEyes's Avatar
    BluEyes is offline Cadillac Owners Enthusiast
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    Re: MPG-Crate Engine

    Quote Originally Posted by terrible one
    Great looking car. Isn't there some way you can get an A/C compressor on the Edelbrock? Some small one with a custom back bracket or something like that?
    You might try looking at the later 368ci Caddies. They had a newer style compressor that is MUCH shorter (a bit bigger around though) and looks like it might be able to be fit if one had the desire.

  6. #21
    terrible one's Avatar
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    Re: MPG-Crate Engine

    I know I've heard of it before- someone fitting one of those short compressors on it. Maybe it was on the MTS forums.

    Either way, I would go for modifying the stocker. Cheaper, just about as much performance, and your A/C compressor fits.

  7. #22
    WWII is offline Cadillac Owners Member
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    Re: MPG-Crate Engine

    I've thought about modifying the stock, but I'd rather just buy the Edelbrock. I don't have any tools and have no idea on how to cut the center of the original intake. And I also thought I heard something about a compressor fitting the Edelbrock. What size pipes should I run on the stock 500? I was thinking of just going 3in duals, but is that too much on a stock motor? Oh, and I'll throw on some headers with the exhaust...

  8. #23
    terrible one's Avatar
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    Re: MPG-Crate Engine

    I would just take the stocker to a machine shop to do it for you. That is a huge ass thick piece of case iron we are talking about.

  9. #24
    WWII is offline Cadillac Owners Member
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    Re: MPG-Crate Engine

    What do I ask them to do? Any measurements?

  10. #25
    terrible one's Avatar
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    Re: MPG-Crate Engine

    Print off these pictures (taken from the cadillacowners.com site), and show them to them. They might be familiar with it. Either way, they will know what you are talking about.
    Attached Images

  11. #26
    davesdeville's Avatar
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    Re: MPG-Crate Engine

    3" duals is a bit much for a stock engine. Unfortunately the BBC Monte Carlo headers that are probably the easiest/cheapest option for headers on these cars are way too big (either 2 or 2 1/8" primaries, 3 1/2" collectors) for the stock engine. This just gives me an excuse to squeeze more power out of the engine though...

  12. #27
    terrible one's Avatar
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    Re: MPG-Crate Engine

    I would go with 2.5" dual exhaust on a stock engine.

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