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ls1 and ls6 blocks

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Old Oct 13, 2004 | 03:04 AM
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Default ls1 and ls6 blocks

It is my understanding that during the 2001 model year ls1 blocks became the same as ls6 blocks. Is this true for ls1 blocks that came out of f-body cars?
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Old Oct 13, 2004 | 07:14 AM
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Not so much that they became LS6 blocks so much as that they started using the LS6 block in f and y bodies that got the LSx about mid-year 2001.
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Old Oct 13, 2004 | 07:52 AM
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is this true for F bodies?
the pcv system is still ls1 style.
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Old Oct 13, 2004 | 08:04 AM
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Yes. The PCV system was of the LS1 flavor on the LS1 motors. The LS6 got it's on PCV setup. In fact, I changed my '02 PCV system over to the LS6 configuration just a couple of months ago. In the shot below, you can see that my block is an LS6 casting by the telltale lack of the casting boss inside the valley. The pic below it is of an LS1. The boss is next to the 2nd top valley bolt hole.



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Old Oct 13, 2004 | 08:14 AM
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thanks, pics too. I have not had the valley cover off my motor.
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Old Oct 13, 2004 | 08:44 AM
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Default thanks for the information

I love this forum, its so educational!
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Old Oct 20, 2004 | 03:05 AM
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Default still don't understand all I know about this.

could anyone go into a little more detail on this subject. Thanks
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Old Oct 20, 2004 | 07:19 AM
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The LS6 Block was also used on the F body cars 2001 and newer (after a certian build date that I forget)
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