I have a 99 F-250 SD with the 5.4l and was running down the highway with my buddy in his F-250 SD with the 6.0l. he had the jump on me so I slammed it to the floor and was catching quickly only to find my truck seemed to shut down at 85mph.
Are the 5.4 limited? I know, I know I shouldn't be doing 85mph but the thought of being out run by a diesel has me bummed..
thank Jim (the speed demon)