AF: Slant 6 rebuild - cylinder head plug needed | Allpar Forums
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Slant 6 rebuild - cylinder head plug needed

Discussion in 'A Body: Duster, Valiant, Dart, etc' started by George Conboy, Jun 2, 2020.

  1. George Conboy

    George Conboy Member

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    In the middle of an engine rebuild for my 1965 Valiant 200 Wagon. There's a plug in my cylinder head and the plug is cracked. Tried the suppliers I've used in the past (Bernbaum, Roberts Motor Parts, Kanter) but no luck. Any idea where I might find one?
     
  2. George Conboy

    George Conboy Member

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    Shane Estabrooks likes this.
  3. Adventurer55

    Adventurer55 Well-Known Member

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    I had a 63 Valiant wagon. My first car in 1976. 170 3 on the tree originally. 170 became tired and we installed a freshly rebuilt 225. Much much better. Sold it in 77 and bought a 72 Duster.
     
  4. ImperialCrown

    ImperialCrown Moderator
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    The 1965 Mopar parts catalog shows no freeze plugs (also called core plugs or soft plugs) on the slant-6 head, only on the block. There is a threaded plug in the head for vehicles that didn't have the optional heater.
    There was a head redesign in 1974 where it got one freeze plug.
    I don't think that this is a freeze plug. Can you find and post a picture of it from the internet?
     
  5. GLHS60

    GLHS60 Well-Known Member

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    I'm guessing a spark plug tube??

    Thanks
    Randy
     
  6. Bob Lincoln

    Bob Lincoln "CHECK FAULT CODES"
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    Can the OP post a photo?
     
  7. Scrounge

    Scrounge Got parts?
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    If it's a threaded plug as IC describes, and you can remove it, you might want to measure the thread size (if you don't have the device for that, a parts store might), then see if you have any strong bolts in your bolt jar or on your work bench that are an exact fit. Or buy one from a hardware store. That might work until you find a supplier that has the correct OEM or after-market plug.
     
  8. ImperialCrown

    ImperialCrown Moderator
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