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LS2/LS7 reluctor picture

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Old Nov 8, 2005 | 07:28 PM
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Default LS2/LS7 reluctor picture

I googled and got this link of an LS7 crank:

http://us.tnpv.net//2005/GMC200504/G...0764150_PV.jpg

I know at least one other person was worried about having this reluctor gear on his LS2 ("new" ones have it). If you have ever seen a 24 tooth, then you will understand that they are immediately recognizable as being different.

Pull the rear cover or (if you need to swap anyway) the oil pan and it will show you if you have it or not.

I read some reference to GM using the 24 tooth reluctor on some early LS7 engines. If those wound up in crates, those would be some lucky owners.

Also, I wouldn't go by the crank position sensor connector color. Mine was black, but my knock sensors were in the side of the block and that isn't supposed to be the case for an '05. So it would appear that there are sum "mid-run" changes to the late-05/06 LS2/LS7 that cause some to have old&new parts.

Hopefully that helps someone out, via a future search or something.
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Old Nov 9, 2005 | 07:47 AM
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I honestley dont see why its such a bad thing to have this, what am I missing?
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Old Nov 9, 2005 | 08:22 AM
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I didn't mean to post this in this forum, so if one of the moderators wants to move it to LS2/LS7 or Conversions, that would probably be better.

There was some discussion in the last few weeks about crate engines with this reluctor gear that cannot be run with an LS1 computer & wiring harness, creating some obvious and expensive problems.
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Old Nov 9, 2005 | 09:07 AM
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link not working
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Old Nov 9, 2005 | 09:55 AM
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link worked for me, I attached the photo below.
Attached Thumbnails LS2/LS7 reluctor picture-gmc2005040764150_pv.jpg  
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Old Nov 9, 2005 | 10:22 AM
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Ours has the 58x.. It was built on Oct 4th.
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Old Nov 9, 2005 | 11:16 AM
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Mine has the grey plug so I am not hopefull.. haven't pulled it apart yet..
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Old Nov 9, 2005 | 11:27 AM
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We are working on the LS7 wiring harnesses and as I get more of the parts in I do think the gray connector WILL indicate a 58X reluctor. It is keyed differently from the black sensor and I think that's why.

I've never seen an LS2 that didn't have the knock sensors on the side. Where do you think they should have been???

Originally Posted by gogogadget
Also, I wouldn't go by the crank position sensor connector color. Mine was black, but my knock sensors were in the side of the block and that isn't supposed to be the case for an '05. So it would appear that there are sum "mid-run" changes to the late-05/06 LS2/LS7 that cause some to have old&new parts.

Hopefully that helps someone out, via a future search or something.
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Old Nov 9, 2005 | 08:55 PM
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Somewhere I read that the sensors were not in the sides of the block, but I have read so many things...

How do you know what the build date is? I know when mine was shipped (mid Oct).
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Old Nov 9, 2005 | 09:17 PM
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Originally Posted by gogogadget
How do you know what the build date is? I know when mine was shipped (mid Oct).
A buddy sent me the details of the motor via a hookup at Wixom.
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Old Nov 9, 2005 | 10:37 PM
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Originally Posted by gogogadget
How do you know what the build date is? I know when mine was shipped (mid Oct).
PM me with the numbers from the white sticker on the left head, the name of the person that built it, and the colors of the three paint dots. I will see what I can find out.
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