Manifold bolts 472
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500, 472, 425, 368 Discussion, Manifold bolts 472 in Cadillac Engine Discussion; I'm getting a set of headers installed and would like to use locking header bolts. Does anyone know the size ...
  1. #1
    Sasquatch's Avatar
    Sasquatch is offline Cadillac Owners Fanatic
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    Manifold bolts 472

    I'm getting a set of headers installed and would like to use locking header bolts. Does anyone know the size and thread pattern of the manifold bolts for a 69 472? Thanks.


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    terrible one's Avatar
    terrible one is offline Banned
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    Re: Manifold bolts 472

    Take one to your local hardware store and have them make a match I knew it at one time but don't anymore.

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    Sasquatch's Avatar
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    Re: Manifold bolts 472

    Terrible I KNOW that! Just thought maybe someone had the spec.

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    Colt D is offline Cadillac Owners Member
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    Re: Manifold bolts 472

    Sasquatch, I thought all the bolt specs were in the shop manual. I remember from other posts that you have the 69 shop manual. If its not listed in yours, let me know, I can check my 68 manual.

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    Sasquatch's Avatar
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    Re: Manifold bolts 472

    I did find this. Just wanted to cross check with others on the forum.


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    terrible one's Avatar
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    Re: Manifold bolts 472

    The shop manual never lies.

  9. #7
    JTraik is offline Cadillac Owners Enthusiast
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    Re: Manifold bolts 472

    Be careful... those specs you listed are pipe to manifold, not manifold to head... In my '68 shop manual i have here

    Exhaust Manifold to Cylinder Head Screw (3/8)-16 * 2(1/8) @ 35 ft.lbs.

    I found this under section 6, Engine Mechanical.

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