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Old 07-26-2011, 06:23 PM   #1
Buzzman
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Header Plug?

Hey - picked up some used headers the other day for $50. Figured they were worth a try. They look fine, but there's an approx. 3/4 inch hole down near the collector on the driver's side for what I assume is some emissions thing. How can I plug this without welding?

Would something like this work?
http://www.jegs.com/i/JEGS+Performan...00454/10002/-1
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Old 07-26-2011, 06:33 PM   #2
S10Fan
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Re: Header Plug?

Threaded?

Probably for an O2 sensor, should take a 1/2 NPT plug available ay most any parts store.
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Old 07-26-2011, 06:59 PM   #3
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Re: Header Plug?

my grandmas boyfriend/exboyfriend ex husband whatever he is owns gibson exhaust so he hooked me up with headers for a bbc pattern for the 2000+ chevys,but with a bradd plug they were fine on our old 454.

we just got a brass plug at napa
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Old 07-26-2011, 08:01 PM   #4
USSkoval
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Re: Header Plug?

Quote:
Originally Posted by S10Fan View Post
Threaded?

Probably for an O2 sensor, should take a 1/2 NPT plug available ay most any parts store.
O2 sensors aren't 1/2 NPT, they are metric IIRC. You can buy a plug that screws right in... or just thread in an old O2 to plug the hole.
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Old 07-26-2011, 08:30 PM   #5
lilpoindexter
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Re: Header Plug?

many spark plugs have the same thread
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Old 07-26-2011, 09:05 PM   #6
S10Fan
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Re: Header Plug?

Quote:
Originally Posted by USSkoval View Post
O2 sensors aren't 1/2 NPT, they are metric IIRC. You can buy a plug that screws right in... or just thread in an old O2 to plug the hole.
Thanks. I'm not sure what the heck I was thinking about.
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