Originally Posted by scottie2hottie
I agree with above.....the 5.4 is a much stronger motor than you're giving it credit. My buddy has the same year 5.4 as my 7.3L and pound for pound he can almost pull with me, he does have lower gears though....and doesn't get near fuel mileage. I can pull 13 MPGs in either of my powerstrokes pulling my 3K flatbed and a 6K truck on the back. He'll get about 8.
.............you have to drive the 3 valve to believe it,the 3 valve 5.4 V8 and 6.8 V10 came out in 2005 and the 6 speed came out in 2007,it's all about air flow into and out of the motor.