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Thread: Are all IV Big Blocks the same....
          
   
   

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  1. 01-24-2004 01:27 PM #1
    POWER2BURN
    POWER2BURN is offline CHR Member
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    Are all IV Big Blocks the same....

     



    Are all IV Big Blocks the same block?

    can a 396,402,427 be bored and stroked to a 454?

    or is the 396 and 402 limited to a 0.100" overbore like the 427 and 454?
    had a rebuilt 355SB chevy
    it lasted 42,000km
    Got another rebuilt 355SB
    it lasted 62km.
    I still have not had a powerful engine.

    slowly building a quicker truck
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  3. 01-24-2004 05:37 PM #2
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    Matt167
    Matt167 is offline CHR Member
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    I dont think you can change them that much. I do know that you can change a 396 into a 402 just by boring it out a little.
    You don't know what you've got til it's gone

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  4. 01-24-2004 06:22 PM #3
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    viking
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    All but the 402 can safely go 0.70 over, the 402 is a 0.30 over 396, personally I would'nt go 0.100 unless it was to resleeve
    Last edited by viking; 01-24-2004 at 06:25 PM.
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