Engine swap on 5.4

40

Asked by Jan 07, 2016 at 11:18 PM about the 2006 Ford F-150 FX4 SuperCrew Styleside 4WD

Question type: Maintenance & Repair

Can a regular 5.4 in a 2006 F150 be swapped out to the
5.4 flex fuel engine out of an 2007 F150?

7 Answers

148,575

Yep, sure you can. But if your regular gas engine is still good the expense is not worth it. But can be done. See this: "It could, but why would you want to? Fuel mileage with E85 is significantly less than what you get with gasoline, so you're using more E85 to go the same distance you would using gasoline. http://www.f150online.com/forums/v8-engines/283946-04-5-4-liter-flexfuel-conversion-possible.html

3 out of 3 people think this is helpful.
6,245

Are you wanting flex fuel capability or just a new engine?

3 out of 3 people think this is helpful.
40

I'm just in need of a new engine and was curious if the flex fuel could be installed ?

2 out of 2 people think this is helpful.
6,245

The flex fuel and gas engine are about the same as far as internal components, if you use your non flex fuel injectors, sensors, and bolt ons it should work okay.

3 out of 3 people think this is helpful.
40

Ok thank you very much for the info much appreciated.

2 out of 2 people think this is helpful.

Did you end up doing the swap

If so how did it work out I have a 2005 f150 lariat 5.4 siezed motor and looking at a 2007 flex fuel for a donor and don't know if it works

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