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500, 472, 425, 368 Discussion, Carb spacer in Cadillac Engine Technical Discussion; I've heard that putting a carb spacer on the stock intake manifold will net around 15 hp on a 500. ...
  1. #1
    davesdeville's Avatar
    davesdeville is offline Banned
    Automobile(s): 1995 ETC, 75 Deville, Cad500 powered 73 Apollo, 94 Mark VIII
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    Carb spacer

    I've heard that putting a carb spacer on the stock intake manifold will net around 15 hp on a 500. Since my 425 uses the same type low rise intake manifold, it should give me an extra few hp also, if it's true. So anyone know if it's true or not? And what size spacer should I use if I try this?

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  3. #2
    MMNineInchNails's Avatar
    MMNineInchNails is offline Cadillac Owners Enthusiast
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    Re: Carb spacer

    Dunno man, but I'm putting this really super hardcore adapter on my stock intake manifold for my new edelbrock 750. OHHH YEAHHH. Jealous Dave? yeah I didn't think so...

  4. #3
    brougham is offline Cadillac Owners Master
    Automobile(s): 1991 Cadillac Brougham D'Elegance 5.7 Litre
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    Re: Carb spacer

    I've never heard of them making that much difference but sometimes they can make a bit of a difference.

    OHHH YEAHHH. Jealous Dave? yeah I didn't think so...

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