Max bore on a LS6?
02-17-2007, 12:34 AM
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Max bore on a LS6? I was wondering what the max bore would be on a LS6 motor with out resleeving. I just purchesed one and wanted to hone it as much as I could since their was a scratch in one of the cylinders. I was thinking it's somewhere around 3.905-3.907, if that's the case I would only go 3.903 so I could hone it again if I ever needed too.
02-17-2007, 10:38 PM
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Well I bought a block from a guy who poped his motor in a Z06 (c5) and he said the cylinder was scratched but not to badly. I wanted to get the pistons before I take it to the machine shop since they are supposed to hone to the specs of the pistons. But I would hate to buy pistons and the guy to look at me like I'm an idiot cause they aren't going ot fit after the hone work. I was thinking about going with a 3.905 since that is quite a bump from stock and it would still give me some room to rebuild later. I hope that's enough.
02-18-2007, 11:49 AM
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Originally Posted by JASON11WS6
I was wondering what the max bore would be on a LS6 motor with out resleeving. I just purchesed one and wanted to hone it as much as I could since their was a scratch in one of the cylinders. I was thinking it's somewhere around 3.905-3.907, if that's the case I would only go 3.903 so I could hone it again if I ever needed too.
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02-19-2007, 09:45 AM
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Originally Posted by ChevyChad
Careful there with that block. I had what looked to be a small scratch in mine, and it turned out it was a crack! I couldn't tell a differance, but I took it to a reputable machine shop and that is what they told me.
02-19-2007, 09:59 AM
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I bought a LS6 block had it cleaned and looked at then had it honed to 3.905 and installed Mahle -4cc 3.905 pistons. Everything has been going great thus far, I have put about 10,000 miles on it and no complaints.
02-19-2007, 10:03 AM
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LOL sorry man. Better to find out now tho then when you start building it up and paying for machine work! You'd be best off to take it to a machine shop before you buy anything and have them check it out. If it turns out it is just a scratch, then ask them what they think you can get away with honing. Tell them the standard size pistons that are available and ask them which size to order. Don't have them do the machine work yet tho, just have them measure it. Most shops will do this for free. Once you order the pistons, have them measure the pistons and then have the machine work done. Thats what my plan was anyways. But since I had a cracked sleeve, it turned out to be cheaper for me to just order a complete assembled shortblock from SDPC rather than building a new one from scratch. Good luck with it all 
