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History Install flathead intake manifold

Discussion in 'Traditional Hot Rods' started by metaldave, May 5, 2016.

  1. metaldave
    Joined: Aug 27, 2011
    Posts: 81

    from michigan

    When installing an aluminum intake, do you use flat or lock washers under the bolts? Do the bolts go into the water jacket and need sealant on the threads? Thanks Dave Miller
  2. flatjack
    Joined: Feb 13, 2007
    Posts: 895


    Flat washers. No water.
  3. jimmy six
    Joined: Mar 21, 2006
    Posts: 6,926

    jimmy six

    No matter what the caps crew you use or if you choose use studs and nuts (12 point look cool) put never seize on them where they will come in contact with the aluminum.

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