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Is this hole a casting flaw?

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Old 04-11-2007, 11:15 AM
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Default Is this hole a casting flaw?

After removing the water pump I see a hole in the cavity outside the seal. Nothing but air here but the hole which goes through doesn't really look like something cast into the block. Anyone know something about this?
Old 04-21-2007, 11:27 PM
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Does anyone NOT know something about this.
Old 04-22-2007, 12:53 AM
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If there's nothing there but air, I wouldn't worry about it. could be a flaw.
Old 04-22-2007, 11:46 AM
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I have 2 LS1 blocks sitting around and they both have it.




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