Are all 98 and up aluminum blocks the same?
08-08-2007, 07:39 PM
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Are all 98 and up aluminum blocks the same? question in title. I heard that some earlier ls1's had small problems. Don't know if this is correct. Anyone have any problems with earlier ls1 blocks or are they all the same.
08-08-2007, 08:01 PM
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I assume you're talking about the LS1 block. The 97-98 blocks are different than the 99-up LS1 blocks. The main difference is the oil galleys with 99-up having the improved revision and the 98's can't be bored as much as the 99-up blocks. With that said, the 97-98 blocks are solid blocks and usually don't have piston slap like the later years.
08-08-2007, 08:29 PM
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Originally Posted by DrkPhx
I assume you're talking about the LS1 block. The 97-98 blocks are different than the 99-up LS1 blocks. The main difference is the oil galleys with 99-up having the improved revision and the 98's can't be bored as much as the 99-up blocks. With that said, the 97-98 blocks are solid blocks and usually don't have piston slap like the later years.
In general how much horsepower can the blocks take before cracking?
97-98 hp max???
99-up hp max???
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08-09-2007, 12:24 AM
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Originally Posted by mypoorLS1
I don't think one is stonger than another. the newer ones have better oiling. Which is better on a high HP motor
