LS1 5.3L vs 5.7L bore difference?
12-16-2003, 04:21 PM
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LS1 5.3L vs 5.7L bore difference? I am getting close to the build up phase of my 5.3L truck motor. I am keeping it NA for now with some 241 heads and Z06 cam. I noticed that the 5.3L crank is the same PN as the 5.7L. This leads me to believe the only difference is in the bore size. If so, I am thinking of boring the 5.3L out to the 5.7L slug size, theoretically getting the 5.7L power specs. This also makes me think about the Lunati LS1 stroker kit as another possibility. 
Does anyone out there have any info for me? I really appreciate all the head specs that have been posted and replied to so far. Any more help would be wonderful.
Last, is there any info on the all the torque specs for the LS1 motors? Thanks again for any help!
Does anyone out there have any info for me? I really appreciate all the head specs that have been posted and replied to so far. Any more help would be wonderful.
Last, is there any info on the all the torque specs for the LS1 motors? Thanks again for any help!
