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Feb 25, 2008 | 06:55 PM

#1

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From: Drexel Hill

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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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Feb 25, 2008 | 07:45 PM

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From: The Bayou State

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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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Feb 26, 2008 | 03:27 PM

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From: Drexel Hill

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can anyone confirm the size of the egr hole on an ls1 intake?????

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Feb 26, 2008 | 03:30 PM

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From: Southaven, MS (near Memphis, TN)

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Quote:

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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Feb 26, 2008 | 03:47 PM

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From: Jacksonville, FL

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1 3/8" expansion plug from auto zone.

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Feb 26, 2008 | 04:04 PM

#6

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From: Washington Crossing, PA

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i think this is what your looking for. GM part# 12558346

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