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LT1-LT4 Modifications 1993-97 Gen II Small Block V8

AIR system exhaust plug

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Old 05-05-2013, 01:37 PM
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Default AIR system exhaust plug
Hi I am trying to removal my ac and air system, what can I use to plug the threaded female holes in the factory stock exhaust manifolds? I heard since my car is a 1995 that it has a 22mm head, would a o2 bung plug work?? I think they are 22mm. Thanks!
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Old 05-05-2013, 10:12 PM
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I used a carriage bolt with the threads cut off with the factory threaded part smashing it yeeeeaaaars ago. Worked great
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Old 05-06-2013, 05:07 AM
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Either an M18 or M22 drain plug will work fine. They are common enough where you shouldn't have to rig it.
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Old 05-06-2013, 06:59 AM
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Originally Posted by RamAir95TA
Either an M18 or M22 drain plug will work fine. They are common enough where you shouldn't have to rig it.
thanks! I called napa they have them! appreciate it!
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Old 05-08-2013, 07:46 AM
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Perfect fit worked great thanks
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Old 05-12-2013, 05:55 PM
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the m22 is what I used and fit well also
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