Generation III Internal Engine 1997-2006 LS1 | LS6

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Cam bearings

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Old

Oct 19, 2020 | 02:07 PM

#1

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Cam bearings

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

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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Oct 19, 2020 | 02:22 PM

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Those look ready for some 7k pulls

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Oct 19, 2020 | 05:42 PM

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Just touch them up with some silver spray paint.

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Oct 19, 2020 | 06:20 PM

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Quote:

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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Oct 19, 2020 | 07:31 PM

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Quote:

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

Old

Oct 19, 2020 | 07:38 PM

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Quote:

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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Quote:

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?

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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Oct 20, 2020 | 02:38 PM

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How much is to much clearance???

Thanks.

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Oct 20, 2020 | 02:39 PM

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Old

Oct 20, 2020 | 08:20 PM

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Quote:

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.

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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