05-27-2003, 05:45 PM
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CC Member
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Join Date: Jul 2001
Location: Southwest,
WI
Cobra Make, Engine: Shell Valley, Mopar thingy (small block of course)
Posts: 2,215
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Not Ranked
I was told by my engine guru that the cam determines the idle timing and the cumbustion chamber shape and piston shape determine total advance. Your cars weight/gearing/transmission determine the rate of advance.
For my engine for example it is 22*/34* in by 2800 and a Dart with a Magnum 360 (quench style chambers) and an auto would be something like 22*/36* in at 3600. With my open chamber design, I get detonation at 36*. Same engine, different heads/pistons.
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Brent Dolphin
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