Are all 98 and up aluminum blocks the same?
Thread Starter
Teching In
Joined: Apr 2007
Posts: 19
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From: Central Florida
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.
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.
Thread Starter
Teching In
Joined: Apr 2007
Posts: 19
Likes: 0
From: Central Florida
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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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
