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[C2] Manifold pipe plug

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Old Apr 26, 2018 | 10:18 PM
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Default Manifold pipe plug

I have a '67 coupe with an L79 engine. I recently had the valve seals replaced and am in the process of re-assembly. Since the car is pretty "bare-bones", (no A/C or PB) the threaded hole on the top of the intake manifold behind the carburetor has just a plain pipe plug in it (no special fitting). I am wondering if this is correct or is there a special plug required. This looks just like a 3/8" pipe plug you would buy at the hardware store with a square head. A picture of the correct plug in situ would be appreciated.

Thanks.
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Old Apr 26, 2018 | 10:40 PM
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I don't really know what a stock plug would look like but a aluminum plug with recessed allen head looks better than a square steel pipe plug. Unless it's an iron intake then a iron plug with recessed allen head would be a better match. Most hardware stores should have'm.
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Old Apr 27, 2018 | 09:12 PM
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Without A/C, the '67 L-79 aluminum intake just used an ordinary steel square-head NPT pipe plug; the iron-intake base 300hp engine used the same plug.
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Old Apr 27, 2018 | 09:22 PM
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I would have liked it to be something more "exotic, but it is what it is. Mine looks just like the ones in the pictures.

Thank you, John
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