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Thread: Ls1 Harland Sharp 1.8 Rockers

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  1. 05-17-2009 08:46 PM #1
    CHEVROLADE
    CHEVROLADE is offline Senior Member
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    Jan 2008
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    my buddy had no problems on his 08'5.3,stock springs too.TTT
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  2. 05-18-2009 03:28 PM #2
    rubrhammer
    rubrhammer is offline Member
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    What type of improvement did he see on the stock motor?
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