All depends on the weight that the 150 hp has to push, or pull, and the gearing.
150 horsepower
Around 60-65, top end.
Fast
260 horsepower
I believe the 2008 Ford F-150 / 5.4 L has 300 horsepower
310 horsepower on gasoline / 320 horsepower on E85
The 4.2 L - V6 - in a 1997 Ford F-150 is rated at 205 horsepower
Horsepower has NO direct relationship to speed.
There are two horsepower options for the Ford F 150 in the year 2012. One can choose 360 horsepower or 380 horsepower options. Both are V8, 5.0 liter engines.
285 -------------------------------------------------------------------------------------------- The 1998 Ford F-150 ( 5.4 liter is 235 horsepower ) The 2010 Ford F-150 ( 5.4 liter is 310 / 320 horsepower )
Hello, 3.0L = 140 - 150 horsepower
I believe that to be 235 horsepower