03-24-2009, 06:07 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Not Ranked
I have never heard of a cooling system developing pressure from not being driven -- sounds like some sort of reaction to me as well. Flush and fill the system and see if it goes away.
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