07-25-2011, 07:28 PM
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CC Member
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Join Date: Jun 2008
Location: Chester Springs,
PA
Cobra Make, Engine: Kirkham 289 FIA #690, FRPP 427 Boss engine
Posts: 764
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Not Ranked
If the higher temp is at idle or in stop and go, and the lower temp is at highway speeds, then you have the classic symptoms of an insufficient fan. This is the primary cause of engine temp swings like yours.
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Kirkham #690 289 FIA
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