stxf150

i have a 2005 f150 stx with a 4.6l in it and i was thinking about putting in a 5.4l but i here from some people that have a 2005 5.4l has some problems when they change out the spark plugs for the first time that there engine never runs the same after that... i was wondering if this is true and stay away from those motors and put some parts in the 4.6l or if i should get it and hopefully not worry about any problems.... thanks

07FX2

go with a 08+ 5.4 they have a one piece sparkplug. I dont see why it wouldnt run right unless they did not put motor craft plugs back in. I heard if you dont use motorcraft sparkplugs the engine will not run right. 5.4 is a great engine so dont worry.

stxf150

will the 08+ motor fit in my 05 though? cause i know the 05 will fit right in and bolt up to the tranny and all i would need to do is put in a tourque converter and get a new ecm

07FX2

yea man the same frame

stxf150

ok cool thank you for your help

07FX2

No problem man

05FX4-

Too pricey and time consuming to do an engine swap. You will need a complete donor vehicle for the ECU, Harnesses, and whatever else come up. I recommend you just get a truck with a 5.4 already in it. Like I said it can be done but it will cost time and money. The 5.4 is a great engine and they make a 1 piece spark plug that you can buy and it runs just great. I know I did it lol. Good Luck

flipd2k

i heard it w0uldnt b0lt 0n t0 the transmissi0n ??????? but im n0t t00 sure h0w b0ut 0ne 0f these???


http://www.fordracingparts.com/crateengine/main.asp

kmac1036

x2... the 5.4s probably have more power in the '05s enough to make it worth while to buy them for the power, but were so prone to issues, i advised a friend of mine then to stay away from the 5.4... the 07 & the 08 models I test drove were doggy. you'd be better to trade or sell for a newer one with the engine you want. the new 3v 4.6s run pretty hard. there isn't a lot of difference in power with the 5.4 & they get better mpg.

it's harder to sell something with an engine that's been swapped / replaced / messed with like that. most people don't want them or will pay less b/c they think it may be a problem.

stxf150

yeah the thing is i cant afford another truck or trade in the truck but i have about 3 grand to go towards the truck that i got from a car accident i got into and i dont mind the couple days worth of work cause i have another car to use while im working on it.... yeah i dont know if i want to trade in my truck down the road or if i want to keep it till it dies... what i was going to do was put in a 5.4 and i was going to put some simple engine upgrades on it and i was going to put a long travel kit that i was going to build myself..... a friend of mine had a 06 f150 4.6 with a lot of engine upgrades done to it and i think he had a 7 inch lift on it and he was telling me that he couldnt pass himself on the freeway and i dont want to put a long travel kit on and not be able to have fun in it..... so i dont know if i should figure out a way to just build up the 4.6 to try and get it to be as fast or even faster when i put 35's and a 8" lift so thats my biggest consern that it will be super slow and i dont want to regret putting the 8" long travel kit in