boring an ls1
#2
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if you do a search it would give you thousands of answers i believe....if i remember correctly...dont take my word for it...you cant bore an LS1...you have to resleeve it...i know ive seen previous threads about it...but im not an expert in no means
#3
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Yup the 98 to mid 99 blocks only allow 3.904 I believe. I know for a fact the 2000 up are safe to 3.910. Some claim they have gone further with no ill effects but I wouldn't recommend it.