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Old 05-11-2015, 02:52 PM   #1
Lou Boffa
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Plug ?

I pulled my radiator and was cleaning up and found this plug on the core support. (along with other misc hardware from 45 yrs of maintenance.) Do any of you all know what it would be from? It's 5/8" diameter.
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Old 05-11-2015, 03:21 PM   #2
Keith Seymore
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Re: Plug ?

Looks like a sight plug off the float bowl of a Holley carb (depending on the size).


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Old 05-11-2015, 03:27 PM   #3
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Re: Plug ?

X2
Is it brass?
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Old 05-11-2015, 05:42 PM   #4
Lou Boffa
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Re: Plug ?

no, its steel
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Old 05-11-2015, 07:17 PM   #5
hugger6933
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Re: Plug ?

That screws into the cooler where the transmission lines go. those were to block off the cooler for trucks with a manual transmission. that way the same part number radiator could cover more applications. Jim
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Old 05-12-2015, 06:54 AM   #6
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Re: Plug ?

Quote:
Originally Posted by hugger6933 View Post
That screws into the cooler where the transmission lines go. those were to block off the cooler for trucks with a manual transmission. that way the same part number radiator could cover more applications. Jim
x2.That would be my second guess.

Shown below: plug installed in a '65 GTO (4 speed car).

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Old 05-12-2015, 10:00 AM   #7
Lou Boffa
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Re: Plug ?

You guys amaze me. Just a wealth of history and knowledge. Thanks. I wonder how many years that plug has sat there on the bottom rail of the core support. Very cool.
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Old 05-12-2015, 01:02 PM   #8
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Re: Plug ?

Quote:
Originally Posted by hugger6933 View Post
That screws into the cooler where the transmission lines go. those were to block off the cooler for trucks with a manual transmission. that way the same part number radiator could cover more applications. Jim
X3. From a replacement radiator probably.
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