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98 ls1 block question

Generation III Internal Engine 1997-2006 LS1 | LS6

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98 ls1 block question

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Aug 29, 2010 | 02:53 PM

#1

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98 ls1 block question

ive heard that the 98 ls1 block is different then the 99 and up. does anyone know if that is true?

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Aug 29, 2010 | 03:30 PM

#2

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Yes that is true. The 99 and up blocks have a better oiling system which makes them more desireable if your going to hot rod it.

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Aug 29, 2010 | 04:41 PM

#3

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Try the search function. It seems like this question gets asked every three months or so.

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Aug 29, 2010 | 07:12 PM

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thanks i did a search and it heled alot. it seems the 98s have thinner sleeves but are still pretty strong, i was planning on putting 6.0 heads on it since i am boosted and it looks like i would need new valve covers since the 6.0 are center bolt, but then it looks like the water jackets on the 98 are in different spots then a 6.0? is that correct?and what head gaskets should i use? thanks!

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