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difference between 04 GTO LS1 and 01 02 fbod LS1

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Old 02-21-2008, 06:07 PM
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Default difference between 04 GTO LS1 and 01 02 fbod LS1
Just like the title, is there a difference? I know there is on the 98-00 LS1's and the 01-02's (intake, !egr, chance of an ls6 block etc.) but is there anything new on the 04 LS1? I searched but couldnt find anything
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Old 02-21-2008, 08:27 PM
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anybody? or did I post this in the wrong section?
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Old 02-21-2008, 10:23 PM
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The 04 GTO's all had LS6 style blocks. The 04-up blocks use headbolts that are equal length versus the LS1 which had shorter bolts in the front & rear inner holes.
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Old 02-22-2008, 12:49 AM
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Depends when the 04 GTO was built. My car has the different-length headbolts.
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Old 02-22-2008, 04:10 PM
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So the only difference on the motors is different lenthed headbolts?
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Old 02-22-2008, 04:58 PM
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pretty much, they didn't get the ls2 till 05. Same motor as an 03-04 vette.
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Old 02-22-2008, 07:19 PM
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Overall specs on all `01-04 LS1's are identical.
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Old 02-22-2008, 07:32 PM
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I read somewhere that the 04 GTO LS1 has the LS2 valley pan.
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Old 02-22-2008, 07:49 PM
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Mine has the LS2 waterpump.
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Old 02-22-2008, 09:22 PM
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04 GTO has an LS6 intake.
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Old 02-22-2008, 09:25 PM
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nothing in the longblock.
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Old 02-24-2008, 10:05 PM
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Originally Posted by massls1guy
I read somewhere that the 04 GTO LS1 has the LS2 valley pan.
The LS2 valley cover will not work on the LS1. The '04 GTO cover is a revised LS6 piece with integrated PCV.
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Old 02-24-2008, 10:39 PM
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Originally Posted by Black Goat
04 GTO has an LS6 intake.

So does the 01-02 f-body ls1
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