I'm in the 1987-1996 club now but am looking into moving up in the world. I get about 10mpg with an 89' (got a lift) but was wondering what i would get with a 1997 f150 w/the 5.4. I was also interested what a 3" or 5" w/33 or 35's would do to my mileage. I know everyone brags and boosts their gas mileage when they say it, but I'm looking for actual mileage here.
Thanks
brian

 

the bigger tires will kill you. but expect about 12 mpg in town and up to 17 or so freeway. the power difference from your current engine to the 5.4 will be huge.

 

remmeber that your driving habits affect the MPG you get. If you go big tires and all then don't expect much MPG.

 

Just checked my 2000 150 2wd 5.4 with 74,000 miles. My drive is 3/4 highway[70] amd 1/4 around town. I was focused on best milage with casual start/stops. I was pleased with 15.

 

i'm averaging (50% city, 50% hwy) 15mpg with my 02 150 Supercrew 4x4 w/5.4L. I drive it nice though.

 

I get 15-16 mpg on my 2002 5.4L FX4. I drive conservately. I get 14-15 on my recent 98 5.4L 4x4. Mostly 50-50 city and highway drivings.

 

2000 5.4 Scab 4x4- 12-13 city, 16-20hwy, towing=sux.

Mike

 

That is some decent numbers for a 5.4, I have a 4.6 in mine and so far on average it gets 21 mpg on the highway which I thought was pretty decent, but if I would have known that the 5.4 would be getting these numbers I sure would have got that instead!

 

hey, thanks for the input on the 4.6, thats helpful. Anyone have any numbers for 33's w/a 3 inch lift, just curious.brian

 

I have 33's, no lift, and a superchips, intake and exhaust, on a good day from dallas to huntsville, at 75, I can get about 22. the most i've seen is 24

 

Dallas to Huntsville is 160 miles flat as a fritter and slightly downhill to boot. Even with perfect weather and a tail wind I say 24mpg is total BS.

 

I'm sorry you think that, but I check it every time, and the best I got was 24, avg about 20

 

So to those who have driven the 4.6 and 5.4 or those who feel strongly, is there a giant difference between the two or some factors which would make one a lot better buy.

brian

 

I personally think there is a big power difference in the 4.6 and 5.4, if I could have I would have definately gone with the 5.4.

 

5.4 definitely. Make sure you get the 3.73 gears as well, as these 3.55s suck.

Mike