E series 5.4

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11-21-2006, 03:31 PM

kgwld1

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E series 5.4

Just wondering If I have the 4 or 8 thread spark plug holes/ Build date is 01/03 the heads have the casting #of RF-2L1E6090C206
5.4L PI
74
Anyway to tell.
Kevin

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11-21-2006, 08:58 PM

LxMan1

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Without removing a plug, it's really hard to tell.

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