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  1. 10-20-2009 08:58 PM #1
    2000gmc
    2000gmc is offline Member
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    Cool 12.9s down to 12.7s

    With the drag radials I was able to drop my 2ths. Went from a 12.9 to a 12.7. Just did a fuel upgrade msd fuel pump and 39lbs injector. Hopefully this will help me since it was leaning out after 5,000rpm.
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  2. 10-20-2009 09:13 PM #2
    CHEVROLADE
    CHEVROLADE is offline Senior Member
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    nice times
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  3. 10-22-2009 01:42 AM #3
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    JARRETT
    JARRETT is offline Member
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    Might pick up a couple more tenths, and some MPH.

    -03 GMC, Rc, 4x4, 6.0L, JFR Isky, JFR 317's KBRacing T78/68
    Boost only, Daily driver.
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