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Old 07-11-2016, 07:35 PM   #1
Stewart Way
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Default 6.0 LS alum block sleeve replacement

I know little to nothing about the LS alum blocks but I have seen a block that hurt a cyl and a shop bored the old sleeve out. As I understand these sleeves they are cast in place. It looks like the old sleeve and the block had thread like grooves in both. The sleeve they have to replace the old with is a regular sleeve. Smooth on the outside. What is the proper procedure for replacing a sleeve on this block?
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Old 07-11-2016, 08:01 PM   #2
Rich Biebel
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Default Re: 6.0 LS alum block sleeve replacement

http://www.westonmachine.com/
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Old 07-12-2016, 10:21 AM   #3
Mike Taylor 3601
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Default Re: 6.0 LS alum block sleeve replacement

Block is cast around sleeves,the original has grooves around O.D, that the aluminum cast into,when bored for sleeve the grooves will be gone and sleeve will be smooth on O.D. also.
Darton,LA or Melling should/will have flanged sleeves.
Sleeve needs to be flanged at top for aluminum block.
BTW if block has hole/crack into water jacket,that has to be repaired and then sleeve installed, the sleeve won't repair the block like it does on cast iron block.
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Old 07-12-2016, 06:43 PM   #4
Stewart Way
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Default Re: 6.0 LS alum block sleeve replacement

Thanks Mike
That appears to be the method being used on this repair. There was no damage to the aluminum but rather damage to the bottom of the existing sleeve when the boring cutter went too deep into the cylinder and hit bottom. What threw me was these grooves are actually rifling or threads so I just wondered if these sleeves screwed out. I did google and found the sleeves are cast in place so don't understand why they are threads and not just circular grooves. Guess its cheaper to cut a continuous groove rather than several circular grooves. Like I said, I know very little about these modern GM engines being an old Mopar guy.
Thanks again.
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