364 intake question

Discussion in ''Da Nailhead' started by marxjunk, Aug 12, 2018.

  1. marxjunk

    marxjunk Well-Known Member

    For my whole life, for some reason, i thought a 364 intake was a bolt on to a 401-425..i thought they where the same width..im sure everyone knows the diff in early to late nailhead intakes are the width

    so..does a 364 intake bolt on a 401 i need to figure it out..because my memory isnt as sharp as i would like anymore..
  2. wkillgs

    wkillgs Gold Level Contributor

    Had this info saved, likely from the Yahoo Nailhead board:

    322 Buick ... 364 Buick ... 401/425 Buick ... Each of these Buick engines has a different measurement across the rows of bolt holes that bolt the manifold to the heads. 322= 8 3/8" ... 364= 8 3/4" ... 401 and 425= 9 1/8"
  3. marxjunk

    marxjunk Well-Known Member


    i found a blower intake for a 364....cant seem to find one for a 401...so..the hunt continues

    thanks walt..appreciate it
  4. wkillgs

    wkillgs Gold Level Contributor

    You can slot the bolt holes, but port alignment becomes a problem. But maybe you can do it with the blower manifold? I don't know what the inside of the blower manifold looks like.
    Last year I saw the Falcon with the blown Nailhead built by Chuckles Garage. You could ask them what they used.
  5. John Codman

    John Codman Platinum Level Contributor

    364 intake manifold is 364-specific, 401-425 manifold is 1/4" wider then the 364.
    Last edited: Aug 21, 2018
  6. marxjunk

    marxjunk Well-Known Member

    yep..thats what i have confirmed..

    thinking about turning around and doing a pontiac engine instead..i have pontiac stuff..some cool stuff and found a complete set minus super charger for dirt cheap..intake, drive and all, and a fresh blower..under 2k..way over 4k to do something nail head if i buy all new..and i dont want billet or polished up modern stuff..

    i really want the nail head..but keep hitting walls..hard unpassable walls..

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