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What's wrong with this cam bearing?

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Old Nov 18, 2013 | 11:53 AM
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Default What's wrong with this cam bearing?
Hi everyone, I'm in the process of doing my first heads and cam upgrade on my 2005 LS6 CTS-V. When I pulled the cam, I noticed the front bearing looked like the picture below. What's this condition called & is it bad enough to replace the bearing? Can I replace this bearing w/o pulling the engine? The other bearings, deeper in the engine, do not look like this.

(Before I pulled everything apart, I didn't have any indications of anything wrong and the cam itself looks un-scored/good. )

What's wrong with this cam bearing?-pm3nhlr.jpg
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Old Nov 18, 2013 | 11:55 AM
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Pic is blurry, is that surface rust or is material missing from it?
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Old Nov 18, 2013 | 12:01 PM
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looks like it's material missing to me
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Old Nov 18, 2013 | 12:02 PM
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Better change that one, Its toast.
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Old Nov 18, 2013 | 12:03 PM
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Originally Posted by Burken01
Pic is blurry, is that surface rust or is material missing from it?
Either way, that bearing needs to come out and be replaced. I personally wouldn't run it like that.
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Old Nov 18, 2013 | 12:06 PM
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better pic - how tough is this to change?

What's wrong with this cam bearing?-wyyi3xe.jpg
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Old Nov 18, 2013 | 12:56 PM
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Time for new cam bearings...
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Old Nov 18, 2013 | 01:04 PM
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Yea, that's really bad...
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Old Nov 18, 2013 | 01:22 PM
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Can I do it with the engine (and crank) in the car?
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Old Nov 18, 2013 | 01:57 PM
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Originally Posted by jclayc
Can I do it with the engine (and crank) in the car?
If you don't have the right install tool, you can't do it at all. If you have a friend with a cam bearing tool, they might be able to change it with the motor still in the car.
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Old Nov 18, 2013 | 02:15 PM
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Make sure you get the holes lined up
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Old Nov 18, 2013 | 02:16 PM
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I'm willing to buy the right tool - Lisle 18000 looks like it would work.

from what I'm reading, to install the #1 bearing, I've got to put the guide cone in through the rear of the engine to make sure everything goes in straight. Not sure if that'll happen http://www.lislecorp.com/uploads/ins...6DD9726DB5.pdf
Last edited by jclayc; Nov 18, 2013 at 02:40 PM.
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