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bore questions

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Old 03-02-2008, 09:07 PM
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5.3 vs 5.7 is the bore the same? would it be as easy to turn the 5.3 to a 5.7 as it seems. just ls1 crank and rods?

Last edited by whitesmoke00; 03-02-2008 at 09:08 PM. Reason: spelling
Old 03-02-2008, 10:58 PM
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pretty sure its a different bore
Old 03-04-2008, 09:28 AM
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Originally Posted by lmt0705
pretty sure its a different bore
The bores are different on those two blocks.

Keith
Old 03-04-2008, 12:43 PM
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3.8 for the 5.3
3.9 for the 5.7
Old 03-04-2008, 01:26 PM
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You can bore a 5.3 out to the 5.7 bore and have an iron block 5.7. But they are different. I believe they use the same crank and rods tho
Old 03-04-2008, 06:19 PM
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thanx for the feedback. had read something somebody said bout it so i was curious bout it. go back to plan a with a 6.0 iron block and throw the boost to it.



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