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Can a 6.0 be bored to a 427?

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Old Nov 14, 2010 | 08:39 PM
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Lightbulb Can a 6.0 be bored to a 427?

Can the 6.0 be bored out to a 427? I know the most popular mod is the 408 for the 6.0 but my motto is go big or go home. If it can be bored out that big what does everyone think about this rotating assembly from texas-speed? Its priced right and they also have a 408 kit 2.

http://texas-speed.com/shop/item.asp...d=888&catid=88
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Old Nov 14, 2010 | 09:11 PM
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u can bore it over .060 and add a 4.125 crank, 6.125 rods and 4.060 pistons if my math is correct you should be around a 425-427 c.i. range (someone correct me if im wrong)
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Old Nov 14, 2010 | 09:20 PM
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well you have to increase bore and stroke, to get it to that ci you cant just bore it.

A lot of people use an ls3 base and have it bored to clear the ls7 heads, i dont think you can get a 6.0l to clear ls7 heads without resleeving it. But the ls3 427 is the way to go imo.

Last edited by 180ls1; Nov 14, 2010 at 10:00 PM.
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Old Nov 14, 2010 | 09:46 PM
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yes it can be done.
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Old Nov 14, 2010 | 09:54 PM
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Safely I wouldn't go over 408ci with it. You can but what you can do with a 408 you can be done with a 427. The only down-side is you won't be able to use LS7 heads, but ported L92s are just as good. Unless you want to spend $2500 on ported TFS 235's to stay with cathederal heads.
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Old Nov 15, 2010 | 05:26 AM
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I forgot to mention this is an LQ4. And If i can't use the heads I have i'm just going to go 408 with it. From what I understand you just need to clean up the bore and re-hone it correct? You don't need to take material off correct? And is that kit good? Its the best priced one i've seen.

http://texas-speed.com/shop/item.asp...d=886&catid=88 <<<<<<<< Thats the 408 kit
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Old Nov 19, 2010 | 12:51 AM
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Then a 402/408 for sure, bro. You can't rely on the block with more than a 4.030 bore and make it take some real power.
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Old Nov 20, 2010 | 04:27 AM
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i'm going with texas speed's 408 i found a guy to bore it .030 over also going to get it stripped with chemicals and paint it up. this thing should be a real beast
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