Thread: Spark plugs blowing out of the head?
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Old 10-11-2010, 05:31 PM
Bobcat Bobcat is offline
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Join Date: Apr 2007
Cobra Make, Engine: # 757 ERA 427 SC , 482 Al. big block
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From what I could find out , the problem on the 5.4 engines is almost entirely with the 3 valve heads ..... late 2003 and on . The two valve heads don`t appear to be affected .... which is good , since that is what my F150 HAS .
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