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Old May 11, 2009 | 06:54 AM
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Will a water pump from 04 gto work on my 98.
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Old May 11, 2009 | 07:18 AM
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Yes, it should fit. They don't make the LS1 WP anymore, so I think they sell the LS2's as a replacement. Ask the dealer.

The only difference is that the t-stat housing is different on the LS2.
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Old May 11, 2009 | 08:01 AM
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Thanks this one was hardly use they went with an electric water pump.So I have an old hyper tech T stat from early 2001 is when i changed it should bolt on the 04 gto's were ls1's correct
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Old May 11, 2009 | 08:03 AM
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Originally Posted by peterock98
Thanks this one was hardly use they went with an electric water pump.So I have an old hyper tech T stat from early 2001 is when i changed it should bolt on the 04 gto's were ls1's correct
No, the LS1 WP t-stat housing is the housing & the t-stat all in one (1 part).

The LS2 T-stat is completely separate from the huosing itself (2 parts).
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Old May 11, 2009 | 08:05 AM
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Oops. Just re-read that. Yes, you are correct - the '04 GTOs were LS1, so everything should be interchangeable. Sorry.
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Old May 12, 2009 | 05:54 AM
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no sweat
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Old May 15, 2009 | 10:59 PM
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https://ls1tech.com/forums/conversio...waterpump.html
I got an ls2 pump I'am worried about the pulley will the belt stay on it.
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