difference 1998 & 2002 LS1 blocks

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Mar 20, 2005 | 06:30 PM

general23cmp

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difference 1998 & 2002 LS1 blocks

I have heard that the block for the past few years has been the same for both LS1 and LS6 engines. What would be the difference in a 1998 (for example) and a 2002 (for example) LS1 block? I am looking to build up an LS1, and have access to an "older" block, but I want to get the best for the task. What would be the other differences, not block specific, between the two?

Thanks guys...

Mar 20, 2005 | 08:44 PM

Another_User

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Quote:

Originally Posted by general23cmp

98s are the only year that cannot be bored at all. They can take a light honing, other than that and they will need a re-sleeve. I am not aware of differences in any other year blocks.

Mar 20, 2005 | 09:50 PM

ChucksZ06

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Quite a few of the 02 blocks are actuallly ls6 blocks with the open webs at the main webs for better oil control from bay to bay and are worth a few hp at high rpms. You can tell by the number stamped on the back of the block.