Generation III Internal Engine 1997-2006 LS1 | LS6
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Old Oct 19, 2020 | 02:07 PM
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Default Cam bearings

I know you’re not supposed to look but here’s the ones from my LQ4.

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Old Oct 19, 2020 | 02:15 PM
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Why aren't you supposed to look?

They look pretty normal to me. Take a dial bore gauge and measure your clearance if you're concerned.
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Old Oct 19, 2020 | 02:22 PM
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Those look ready for some 7k pulls
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Old Oct 19, 2020 | 05:42 PM
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Just touch them up with some silver spray paint.
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Old Oct 19, 2020 | 06:20 PM
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Originally Posted by WE TODD DID
Why aren't you supposed to look?

They look pretty normal to me. Take a dial bore gauge and measure your clearance if you're concerned.
It's sort of a joke. Cam bearings, even slightly worn, show copper coloring, leading many to believe they are worn OUT.
So now it is "advised" to just not look at them if replacement wasn't part of the original plan.
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Old Oct 19, 2020 | 07:31 PM
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Originally Posted by G Atsma
It's sort of a joke. Cam bearings, even slightly worn, show copper coloring, leading many to believe they are worn OUT.
So now it is "advised" to just not look at them if replacement wasn't part of the original plan.
Head in the sand kind of deal. I get it.

They’re just too easy not to replace if you don’t have a way to measure them.

Everyone probably already knows this, but new oem bearings come out of the box with copper showing
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Old Oct 19, 2020 | 07:38 PM
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Originally Posted by WE TODD DID
Head in the sand kind of deal. I get it.

They’re just too easy not to replace if you don’t have a way to measure them.

Everyone probably already knows this, but new oem bearings come out of the box with copper showing
The thing is, LS cam bearings really last a long time, so it's a case of "ignorance is bliss".
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Old Oct 19, 2020 | 09:04 PM
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Originally Posted by G Atsma
The thing is, LS cam bearings really last a long time, so it's a case of "ignorance is bliss".
what’s your verdict?
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Old Oct 19, 2020 | 09:45 PM
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Just to be safe, measure the inside of the bearing in 3 or 4 places to get a bore figure, then subtract the cam journal diameter to get your clearance
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Old Oct 20, 2020 | 02:38 PM
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How much is to much clearance???

Thanks.
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Old Oct 20, 2020 | 02:39 PM
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Old Oct 20, 2020 | 08:20 PM
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Originally Posted by WE TODD DID
Head in the sand kind of deal. I get it.

They’re just too easy not to replace if you don’t have a way to measure them.

Everyone probably already knows this, but new oem bearings come out of the box with copper showing

I did not know that.
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Old Oct 20, 2020 | 10:03 PM
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Worst part is the split design of them. The coating wasn't just wore off my ls6....it was flaking off. That's what lead me to rebuild it....well that and it wasn't gonna get run any easier 😁
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