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hi i am new to the forum and new to the lsx.. i just wanted to know if the ls1 came in a 5.7 and 6.0 or is it just the 4.8-5.3 block?? thanks for the info 
09-11-2010, 02:08 AM
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The actual LS1 only came as a 5.7L engine, nothing else. The other "LSx" style engines (4.8/5.3/6.0/etc.) received their own respective RPO (Regular Production Order) codes.