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EGR plug

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Old 02-25-2008, 06:55 PM
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Default EGR plug
yes i tried search for awhile but all i could find was how to cap off the headers



anyone know how to block off the ls1 intake manifold where the egr enters???


this would be of huge help right now. thanks
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Old 02-25-2008, 07:45 PM
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Measure the top of the whole and go to the parts store and get a rubber freeze plug. I think it's a 1 5/8" not totally sure, it's been awhile since I did mine. The freeze plug will have a nut on top that you tighten down to seal it in the whole.
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Old 02-26-2008, 03:27 PM
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can anyone confirm the size of the egr hole on an ls1 intake?????
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Old 02-26-2008, 03:30 PM
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Originally Posted by Dskeet6
can anyone confirm the size of the egr hole on an ls1 intake?????
Like that guy said..it's around 1 5/8 or so..just take a ruler or tape measure and check
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Old 02-26-2008, 03:47 PM
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1 3/8" expansion plug from auto zone.
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Old 02-26-2008, 04:04 PM
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i think this is what your looking for. GM part# 12558346
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