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  1. #1

    Compression on 580 Yellow motor ?

    I just picked up a '89 with the 580 motor ( yellow ) for almost nothing. What should the compression be on one of these? I'm getting 120 psi on both cylinders.

    Thanks!


  2. #2
    dghal's Avatar
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    Jul 2008
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    like to see 130-140 BUT take in account for error on gauges your "EVEN" 120 is good.

    is it running?

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