Found this in Corvete Enthusiast HERE (http://editions.amospublishing.com/KPCV/default.aspx?d=20091201)
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PDF Printable Copy HERE (http://www.splashedpaint.com/AMCC/2009/Articles/PowerValve/PowerValve01.pdf)
(http://www.splashedpaint.com/AMCC/2009/Articles/PowerValve/01.jpg)
(http://www.splashedpaint.com/AMCC/2009/Articles/PowerValve/02.jpg)
(http://www.splashedpaint.com/AMCC/2009/Articles/PowerValve/03.jpg)
(http://www.splashedpaint.com/AMCC/2009/Articles/PowerValve/04.jpg)
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