Originally Posted by DLONGLANDSCAPING
Great topic! I would like to know too. The 5.4l engine has been used for awhile on f 250 and 350's. Whats the difference between a 03,04,05 vs 10,11,12?
In 2005 the 5.4 and V10 became 3 valve motors with increased power. They also went from a leaf spring to coil spring front end. The 05-08ish motors had an issue with the plugs sticking in the head and potentially breaking. They make tools for extraction. You want an 05+ as it has more power. In the 5.4 it's something like 260hp to 300hp and the V10 was 320hp to 347hp.
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