L99 Lifter Valley Marks

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Apr 20, 2022 | 02:36 PM

MySons68C20

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Staging Lane

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From: Wenatchee WA

L99 Lifter Valley Marks

Are these marks above the camshaft normal from the factory? This engine is a pullout from a 2012 Camaro w/97k miles.
Thank you.
Blake

Apr 21, 2022 | 10:03 PM

rpturbo

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From: A-Town, Ill side

I'm going with no. That right side looks like something knocked it out. I honestly don't know though, I'll check another L99 we have, but it will be a couple days.

Apr 22, 2022 | 10:28 AM

MySons68C20

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Staging Lane

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From: Wenatchee WA

The engine rotates freely through 2 complete revolutions on the stand. It does not appear to have ever been taken apart from what we've seen so far. No chunks in the pan or oil filter.
Thank you rp for checking.

Apr 22, 2022 | 01:27 PM

theunderlord

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From: Seattle

looks like someone tried to hog out that window near the timing chain.

Apr 22, 2022 | 03:48 PM

MySons68C20

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Staging Lane

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From: Wenatchee WA

Here is a pic of the timing chain side...

Apr 22, 2022 | 03:52 PM

MySons68C20

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Staging Lane

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From: Wenatchee WA

Apr 22, 2022 | 10:02 PM

RonSSNova

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From: Portland, OR

I have an L99 block in my vette.
That area looked like crap. Bunch of casting flash that looked like the foundry did a half assed job of cleaning up.
So I took the time to do it right.

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