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camgrinder camgrinder is offline
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Join Date: Feb 2004
Location: California
Posts: 924
The following two quotes are from Demas class notes,

In a performance engine, the intake valve is lifted past its point of maximum port flow.
This increases the amount of time that flow is maximized, limited by the port.
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John Dougherty
Dougherty Racing Cams
Old 04-18-2005, 10:41 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #154 (permalink)