Blown 454 compression
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Blown 454 compression

  1. #1
    Senior Member blurred vision's Avatar
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    Apr 2009
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    Default Blown 454 compression

    I have a 454... 871 blower....My compression is between 123 and 145,,engine has 350 hrs....Is it time to rebuild...What compression should i have....

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  3. #2
    Gone
    Join Date
    Dec 2007
    Location
    Sparks, Nevada
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    1,824

    Default

    Who knows depending on your camshaft, valve lash, cam phasing, altitude and cranking speed?
    Do a leak down instead.

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