1989 302 exhaust leak in back of head

Discussion in 'Technical' started by FTH73, Nov 21, 2009.

  1. FTH73

    FTH73 Average Bear

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    1973 Maverick
    I did a 302 swap years ago and used JB weld to plug the holes in the back of my heads and one side blew out today. Is that hole threaded? If so what size and thread pitch count is needed to plug it? I feel like I had the answer to this question back in the day, because I remember thinking too late the JB weld is in now. If anyone has the answer it would be greatly appreciated.(y)
     
  2. Jsarnold

    Jsarnold Senior Member

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    5/8 NC thread.
     

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