Is this normal? Crankshaft grooves

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11-12-2011, 11:45 AM

Warren S

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Is this normal? Crankshaft grooves

I noticed this while changing the cam. LS1 that just turned 31k miles. Is this normal machining?

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11-12-2011, 12:52 PM

parks450

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Yep thats normal, thats one of your lobes.

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11-12-2011, 01:04 PM

3rdCoastPowerSports

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i agree with Parks450 its normal

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11-12-2011, 08:14 PM

noice

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I'll take a picture of one that I have at the shop right now, but yea they have that rough machining on the flyweights.

Edit...Opps meant to say counter-weight not flyweight. Flyweight is a boxing class... duh!

Last edited by noice; 11-14-2011 at 09:57 AM.

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11-13-2011, 02:27 AM

01ssreda4

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That's a counter-weight. They aren't machined slick by any means.

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11-14-2011, 07:10 PM

noice

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Front counter weight, LQ4 6.0L 2005. You can see the grooves that are typical.

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