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Help Identifying a Camshaft?

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Old Feb 22, 2012 | 06:29 PM
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Default Help Identifying a Camshaft?

Hey guys,

I need some help identifying a mystery camshaft...

It says 81282 on the end, as well as 2871E.

It sorta looks billet, so I'm thinking it's not a regrind, but have no way of knowing.

Thanks
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Old Feb 22, 2012 | 06:35 PM
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I should add that it's possible that the 81282 is z8218 upside down.
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Old Feb 23, 2012 | 07:52 AM
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If it's a regrind the base circles will be smaller by something like .050-.075" smaller than a stock LS1 cams base circles .
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Old Feb 23, 2012 | 11:46 AM
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That settles that. It is def a smaller base circle.

So that being said, is there a bad record with stock regrinds?
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Old Feb 23, 2012 | 03:50 PM
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I've only seen 1 re-grind and there was a difference of about .008" between different lobes lift #'s and there is no way to tell what the duration is or the center lines or the lobe seperation angles unless You can find a shop with a cam doctor and pay them to put it on and find out all those #'s .
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Old Feb 23, 2012 | 04:01 PM
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Originally Posted by chrisfrost
I've only seen 1 re-grind and there was a difference of about .008" between different lobes lift #'s and there is no way to tell what the duration is or the center lines or the lobe seperation angles unless You can find a shop with a cam doctor and pay them to put it on and find out all those #'s .
or pull out a vernier or mic and do it all yourself.
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