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Sizes allen head plugs for intake?

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Old Oct 2, 2004 | 12:42 AM
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Cali,68,L-79's Avatar
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Default Sizes allen head plugs for intake?

Switching to a BG Speed Demon and need a plug for the vacuum hole behind the carb plus one for the fitting hole to the driver's side by the water jacket. What sizes?



Fitting, Allen Head Plugs, Aluminum, Blue, Set of 4

These Summit plugs are ideal for sealing fittings and ports. These plugs are available in aluminum or brass to give you good looks that last.

Vendor Summit
Product Line Summit Plugs
Fitting Size 1/8, 1/4, 3/8, 1/2 NPT
Fitting Attachment 1 Male threads
Head Style Internal Allen
Fitting Finish Blue anodized
Fitting Material Aluminum
Quantity Sold as a set of 4.
Notes (Not Specified)
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Old Oct 2, 2004 | 12:17 PM
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ttt

anybody Bueller, Bueller.
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Old Oct 2, 2004 | 02:23 PM
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David,
Just a couple of comments. The vacuum fitting is about 3/4" and is a fine thread. The temp sensor is just shy of an inch and is an NPT/coarse thread. I do not know where the Summit fittings would find an application.

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Old Oct 2, 2004 | 02:34 PM
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Originally Posted by paul67
David,
Just a couple of comments. The vacuum fitting is about 3/4" and is a fine thread. The temp sensor is just shy of an inch and is an NPT/coarse thread. I do not know where the Summit fittings would find an application.

They don't. I measured 5/8"'s off the rear vac hole (EldebrockPerformer manifold) They only offer 1/8, 1/4, 3/8, 1/2 the existing manifold on the car has a allen headed blue block off as pictured above so I'll reuse that one but still looking for the vacuum tee. I may be able to use my stock fitting and won't need the plugs but will have to shave off the holley heat shield. Like this guy.



But I'm ordering one just in case.
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