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Generation III Internal Engine 1997-2006 LS1 | LS6
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Hole in Block???

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Old 03-30-2013, 08:11 PM
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Default Hole in Block???
I was working on my H/C swap and noticed a tiny hole in the block webbing. WTF?? Anyone think this is of any concern? Is this typical?

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Old 03-30-2013, 09:15 PM
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Hmm. Looks like it's in a dry area. No steam or oil passages near it?
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Old 03-30-2013, 09:22 PM
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Originally Posted by JakeFusion™
Hmm. Looks like it's in a dry area. No steam or oil passages near it?
Nah, it's on the passenger side in the corner of the webbing. I have no idea how it got there or how long it's been there.
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Old 03-30-2013, 09:27 PM
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I found pigtails that weren't even plugged in when I started looking through the car closely. Oh well.

If it was running before, it'll keep running. Just don't put a 400 shot of nitrous on it.
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Old 03-30-2013, 10:38 PM
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Looks like an air pocket in the casting. If it isn't leaking don't worry about it
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Old 03-30-2013, 10:42 PM
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I have a hole like that in mine too. It's a 98 block. My 97 block doesn't have it though so Idk
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Old 03-31-2013, 09:02 PM
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Looks like a headbolt has been "hydraulicked" and a piece popped out.
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