I have 2005 f150 4.6 ltr engine can I upgrade to a 5.4 without effecting anything else

Asked by Sep 01, 2012 at 12:26 PM about the 2005 Ford F-150 XLT SuperCrew 4WD

Question type: Car Customization

2 Answers

105

It would bolt up to the tranny, but I don't know if the wiring harness with match up. If not the 5.4L should come with a harness, depending on where you buy it from, or how you get it.

85

I am also not sure about if the wiring harness will hook up from the 4.6 to the 5.4 but the ECM is different.

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