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Whatís going on here? LS3 Block

Old 01-06-2019, 02:51 PM
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Default Whatís going on here? LS3 Block

So I pulled the driver side head off this LS3 and see this. Is that from a bad ring? Or can tell me whatís going on here? Motor has 120k on it.

Last edited by Jayzmaro10; 01-06-2019 at 10:01 PM.
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Old 01-07-2019, 06:08 AM
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looks like a "water mark" to me. but without knowing the history?
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Old 01-07-2019, 09:59 AM
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Need more:
Some history/troubleshooting/symptoms?

But, all of this could be absolutely normal (to some extent)

The key is, what do your other cylinders look like??

Last edited by AndyTA; 01-07-2019 at 10:30 AM.
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