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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.
John Dougherty
Dougherty Racing Cams
Old 04-18-2005, 10:41 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #154 (permalink)