Generation IV Internal Engine 2005-2014 LS2 | LS3 | LS7 | L92 | LS9

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Old Feb 21, 2013 | 08:11 PM
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I bought an LS1 from craigslist with a spun rod bearing for $400.00. Had it pressure checked (it was good.). I had it honed .010 over and the crank turned .020/.020 new cam bearings and cleaning was $477.00. So I have $877.00 in a block and crank. The rods can't be re-sized and the pistons are worthless. So If Im going to build a bottom end, should I build one for a a bigger block?

My reason for posting in the gen IV section is because I'm thinking of selling and starting over with a 6.0 Iron block. I figure if Im going to have to build the bottom end anyway might as well build a bigger displacement block. If I had the cash I'd have a 5.3 re-sleeved to the LS3 bore but that's like 2k plus 5.3 core.

I plan on keeping my heads for the 6.0. Can I use the LS1 turned crank in a 6.0?

Thanks. Here is a link to my CL ad. Criticism is welcome

http://fayar.craigslist.org/pts/3585379629.html

Last edited by longcut; Feb 21, 2013 at 08:16 PM. Reason: fixed link
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Old Feb 21, 2013 | 08:13 PM
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I think you should go for the 6.0 for sure, and yes you can reuse the crank
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Old Feb 21, 2013 | 11:17 PM
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Go for the 6.0, more power!
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Old Feb 22, 2013 | 02:10 AM
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.010 is a lot over on stock sleeves..007 over is about max on the 00+ blocks. Hopefully it holds up.
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Old Feb 22, 2013 | 06:37 AM
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One of my LS books says GM does not recommend anything over .010. Machine shop says no problem.
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Old Feb 22, 2013 | 07:36 AM
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It's your engine...hopefully it lasts for whoever buys it.
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Old Feb 22, 2013 | 08:04 AM
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Yeah, .010 is alot on an LS1 block. It's the reason why the stock bore is 3.898 and the only shelf piston that I know of is 3.905 which would put you .007 like bww3588 said. For .010 over you would need a 3.908 piston and I don't know of anybody who makes one.

If you are going to go 6.0 I would take the iron block out to 4.065 so you can use an LS3 rotating assembly or try to find an LS3 block on here or craigslist.
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Old Feb 22, 2013 | 08:16 AM
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That was going to be my next post, but I figured I would save the argument this time.
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Old Feb 22, 2013 | 08:38 AM
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Originally Posted by bww3588
That was going to be my next post, but I figured I would save the argument this time.
Yeah it gets old after awhile, but you have to remember, we were learning at one time also.
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Old Feb 22, 2013 | 09:44 AM
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I just hate to see people learn the hard way.
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Old Feb 22, 2013 | 09:47 AM
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I dont, it makes for entertainment
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Old Feb 22, 2013 | 10:13 AM
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The difference between .007" and .010" is about the thickness of a plain sheet of notebook paper, divided in half and that's .0015". That's not gonna make the engine any less reliable.

The biggest setback is finding a 3.908" piston, which I'm pretty sure is a shelf piston that Mahle makes, so that's not really a big deal either.

Nearly $500 for that little amount of machining is a raping though, I wouldn't expect to recover your money by selling the stuff. You may be lucky to sell it all for $600.
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Old Feb 22, 2013 | 10:20 AM
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Originally Posted by KCS
The difference between .007" and .010" is about the thickness of a plain sheet of notebook paper, divided in half and that's .0015". That's not gonna make the engine any less reliable.

The biggest setback is finding a 3.908" piston, which I'm pretty sure is a shelf piston that Mahle makes, so that's not really a big deal either.

Nearly $500 for that little amount of machining is a raping though, I wouldn't expect to recover your money by selling the stuff. You may be lucky to sell it all for $600.
See, learn something everyday. Amazon sells that piston.
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