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  1. V8 Links & Resources
    http://www.pingelonline.com/powerflo_valve_positions.htm and http://www.pingelonline.com/powerflo_6211.htm A great link that explains the what the valve series numbers mean, sizes, threads, reserve, non-reserve and more. Guys were talking about a Pingel #6221 but based on the above, I don't...
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