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Thread: 401 header flange

  1. #1

    401 header flange

    I've made a CAD-drawing of a header flange for a 401 ('62, if that matters).
    I got the dimensions by measuring a Fel-Pro manifold gasket (also drew that), but I'm not entirely sure about the dimensions, especially the distance between the two middle exhaust ports.
    Does anyone know this for sure and would they be willing to check this for me?
    Would be greatly appreciated.

    Here's a link to the .dwg file.
    http://www.yourfilehost.com/media.ph...ad_exhaust.dwg

  2. #2
    Nobody?

  3. #3
    I don't know the dim., but the center to center is the same on all nailheads from '53 to '66. The bolt pattern is also the same. I have a '59 and a '58 manifold on my '56 motor. the only difference is that '53 to '56 have round ports and '57 up have rectangular ports. All my stuff is buried under about 4 ft. of snow right now. Jim
    J.R. Lemke

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