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what is the plastic "dog bone" looking thing under rear cover

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Old 12-10-2013, 10:19 AM
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Default what is the plastic "dog bone" looking thing under rear cover
I am trying to figure out why this thing is in the oil journal thank you
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Old 12-10-2013, 10:48 AM
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It's an oil restriction, it's supposed to be there. If it's not, you will have issues.
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Old 12-10-2013, 10:49 AM
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It directs oil flow, keep it in or the car will run like ****
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Old 12-10-2013, 10:56 AM
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It's worth the $5 to replace it also
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Old 12-10-2013, 10:56 AM
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Are we talking about the barbell?
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Old 12-10-2013, 11:18 AM
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Originally Posted by 01ssreda4
Are we talking about the barbell?
Yes, that's what I'm thinking
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Old 12-10-2013, 04:21 PM
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Default thanks guys
now I know it's called a bar bell and I know it is needed and why so thank you very much
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Old 12-11-2013, 08:04 PM
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Without it you will have little to no oil pressure.
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Old 12-11-2013, 08:35 PM
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The barbell separates two oil passages that need to be drilled at the same time after the block is cast.

Later blocks have a barbell version with the O-ring a little deeper.

GM part number 12573460.
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Old 12-11-2013, 08:38 PM
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It's in the galley above the oil filter:
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Old 12-13-2013, 06:56 PM
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Could this be the cause of a bad oil leak? Never heard of one leaking, but you never know.
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