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Help with engine build!!! :)

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Old Apr 8, 2010 | 10:39 PM
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Default Help with engine build!!! :)

Need something cleared up, im getting mixed signals from a couple of different people. I bought a block from someone on here, and it was supposed to be clean honed to 3.907. I have been doing some research adn it seems like thats way too much? Im also having an issue finding pistons to fit. Some are 3.908 but i dont think i want to get any more out of it. So give me your opinions please! Thanks!

Here's the thread with engine pics! First pic is the block! Thanks!
https://ls1tech.com/forums/parts-cla...tc-w-pics.html
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Old Apr 8, 2010 | 11:52 PM
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Mahle makes a few pistons for larger over bores than normal and so can Diamond for a small charge extra as we do them all the time. Generally a shop hones the block FOR a set of pistons not just to whatever they want though? Do you KNOW exactly what the bores are at and if so PM me as we can get you a piston to fit but the selection drops a LOT when you are outside of a standard bore size.
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Old Apr 9, 2010 | 12:32 AM
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When the block gets here ill get an exact measurment. I it still safe to run if it us a 3.907 bore? Yeah I know they usually hone to the pistons, but i got the block for a good price, so I figured I would make something work. I'm just getting used to this aluminum block stuff. Thanks for thr help!
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Old Apr 9, 2010 | 11:49 AM
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Yes it should be fine to run.
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Old Apr 10, 2010 | 08:44 AM
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Originally Posted by 93LS1Ws6
Need something cleared up, im getting mixed signals from a couple of different people. I bought a block from someone on here, and it was supposed to be clean honed to 3.907. I have been doing some research adn it seems like thats way too much? Im also having an issue finding pistons to fit. Some are 3.908 but i dont think i want to get any more out of it. So give me your opinions please! Thanks!

Here's the thread with engine pics! First pic is the block! Thanks!
https://ls1tech.com/forums/parts-cla...tc-w-pics.html
The visible scoring in several of the visible bores would cause me to pass on that block, and the hone crosshatch pattern looks like somebody had a party w/ a cheap 3-stone rig with their electric drill.

Good luck making it run well.
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Old Apr 10, 2010 | 09:56 AM
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+ 1 on what crainholio said as the cylinder bores do not look like a professional job.
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Old Apr 10, 2010 | 02:20 PM
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Ill be taking it to the machine shop to get work done then. I guess ill see what they say.
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Old Apr 10, 2010 | 03:06 PM
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Originally Posted by 93LS1Ws6
Ill be taking it to the machine shop to get work done then. I guess ill see what they say.
Good luck dude, usually a great deal on a block ends up costing more in machine work.
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Old Apr 11, 2010 | 01:14 PM
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Thanks, yeah i know. Ill use it as long as i dont have to re sleave it and that its safe to run. .
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