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Exhaust plug size

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Old Nov 8, 2016 | 07:33 AM
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Exhaust plug size

I know I am new here and havent properly introduced myself or my truck but I am trying to solve minor issues. I am trying to find the plug size for the great big hole in the manifold just below cylinder 5 and 6. Sounds like a tractor otherwise.

Does anyone know the thread size and pitch of this plug, it is somewhere around an inch I believe. Thanks
 
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Old Nov 8, 2016 | 07:35 AM
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Originally Posted by Grandpas77
I know I am new here and havent properly introduced myself or my truck but I am trying to solve minor issues. I am trying to find the plug size for the great big hole in the manifold just below cylinder 5 and 6. Sounds like a tractor otherwise.

Does anyone know the thread size and pitch of this plug, it is somewhere around an inch I believe. Thanks
What engine are we dealing with?
 
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Old Nov 8, 2016 | 07:37 AM
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Sorry I forgot I 300
 
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Old Nov 8, 2016 | 07:41 AM
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I think its a ¾"-14 pipe plug.
BTW, welcome to FTE. Lots of good people here.
 
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Old Nov 8, 2016 | 07:45 AM
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Thanks for the welcome ... I will see if I can find the plug. Does seem like a bunch of great folks on here
 
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Old Nov 8, 2016 | 10:34 AM
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I checked the hole size .. it measures about 7/8 or 15/16 .... is the hole NPT
 
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Old Nov 8, 2016 | 10:41 AM
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If it's the one I'm thinking of, yes.
 
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Old Nov 8, 2016 | 10:50 AM
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371485-S .. Exhaust Manifold Pipe Plug - 3/4" -14 / Obsolete

1965/74 240 I-6 & 1965/79 300 I-6.

GREEN SALES CO. in Cincinnati OH has 128 = 800-543-4959 / 513-731-3304.
 
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