Ls1 block identification
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Ls1 block identification I have an ls1 block made in 99 with the stamp I can’t find this casting number 12553328 anywhere. Does this block have the thicker sleeves in it ? It needs a bore. Thanks for any info
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I have not found that any LS1 blocks have thicker liners than before.
97-99 can't be bored more than .005" safely. After that core location got more precise but liners no thicker, so .005 still applies.
97-99 can't be bored more than .005" safely. After that core location got more precise but liners no thicker, so .005 still applies.
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Block has low compression on some cylinders was in a dune buggy it’s scarred up but not deep 5 might fix it
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It may be possible, depending on the boring equipment, to "shift" the bore centerline of the boring machine, perhaps .0015" towards the "worst" side of the bore, thereby removing more material from the most damaged side. Nobody in the real world would ever notice that minute amount of shift, and neither you, or a dyno, would show any difference. Just an idea, and, yes, I'd be willing to do it on my own engine, if need be. My opinion, YOUR engine.....
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I agree with the +.005" possibly not cleaning up the bore. After all, that's only .0025" per side. However, in all my years in the shop, it still sometimes amazed me how much damage. 005" oversize can remove. Also this, even though purists may flame me to Hell and back:
It may be possible, depending on the boring equipment, to "shift" the bore centerline of the boring machine, perhaps .0015" towards the "worst" side of the bore, thereby removing more material from the most damaged side. Nobody in the real world would ever notice that minute amount of shift. Just an idea, and, yes, I'd be willing to do it on my own engine. My opinion, YOUR engine.....
It may be possible, depending on the boring equipment, to "shift" the bore centerline of the boring machine, perhaps .0015" towards the "worst" side of the bore, thereby removing more material from the most damaged side. Nobody in the real world would ever notice that minute amount of shift. Just an idea, and, yes, I'd be willing to do it on my own engine. My opinion, YOUR engine.....
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