03-19-2004, 03:34 PM
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CC Member
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Join Date: May 2003
Location: Newburgh, IN,
IN
Cobra Make, Engine: 427SC Unique
Posts: 481
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Not Ranked
The only important duration measurement is the amount of overlap at .050. Inglese and Pierce asked me to keep the overlap @.050 below 28 degrees. My 294 Comp is exactly 28 degrees @.050. The valve lash from Comp was .020 hot. I opened this up to .028 and that will absorb some of the duration.(only on a mechanical cam of course)
A motor with compression will also absorb some duration, so take that into consideration.
The point to this: a large duration camshaft in a low compression motor will change things greatly.
Brent
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