Conversions & Swaps LSX Engines in Non-LSX Vehicles
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has anyone got a 5.3 bored

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Old Dec 5, 2008 | 04:22 PM
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Default has anyone got a 5.3 bored

I just want to see if anyone got a 5.3 motor bored to 5.7 or 6.0 or even bigger
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Old Dec 5, 2008 | 04:39 PM
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I've seen them go to 5.7 but don't think they'll go to a 6.0 without sleeves
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Old Dec 5, 2008 | 05:26 PM
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I've got one bored to 5.7, thats as much as you can go.
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Old Dec 5, 2008 | 10:01 PM
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How much is left after you go to a 5.7, how durable is it? I was thinking of doing that with my Truck when it comes times to re-build it.
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Old Dec 5, 2008 | 10:03 PM
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which 5.3?? i am over borin an iron 5.3 and have not seen anything that it cant be bored out as much as any iron block...

if you mean Al.... good luck i think 5.7 is biggest till it gets relaly expensive.
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Old Dec 5, 2008 | 10:28 PM
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3.905 is fairly common, I don't see anyway it would go to 4" you'd already be going about .120 over just going to 3.905
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Old Dec 5, 2008 | 10:35 PM
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Hopefully someone will chime in that has sonic checked the cylinder walls for thickness at these large over bores.
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Old Dec 5, 2008 | 10:35 PM
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The Deck may look like it would, but look at the sides of the complete Cylinders, I knw they do get smaller, and that is where the limits are..
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Old Dec 6, 2008 | 07:22 PM
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yeah Im talking iron block. isnt a 327/5.3 what they start with to make a 350/5.7. What is the average price to get a 5.3 bored to 5.7
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Old Dec 6, 2008 | 07:47 PM
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https://ls1tech.com/forums/new-produ...1499-99-a.html
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Old Dec 7, 2008 | 01:27 AM
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Originally Posted by ROUDA
yeah Im talking iron block. isnt a 327/5.3 what they start with to make a 350/5.7. What is the average price to get a 5.3 bored to 5.7
Depends on what the Machine Shop rates are.

Btw.. 5.3l=323ci..just like the 5.7 LS1, 346ci..
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Old Dec 7, 2008 | 06:06 PM
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A few over on the truck site have done it search there. http://www.performancetrucks.net/forums/
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Old Dec 8, 2008 | 06:31 PM
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the only real question is, how does it effect the block if it weekens it more then a normal ls1 or what
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