Here's an idea, let me know what u think... - Diesel Forum

getpower · 03-16-2008, 03:13 PM

Posting Deleted

10Seconds · 03-16-2008, 08:18 PM

16? No way. Maybe 12. I get about 10.5 mpg on the highway with my v10. The problem is that the v8 is a bit under powered for the truck, so it has to run harder to do the same as the v10's, so really your gas savings are about nil. I had one prior to my current v10.

NEG297F · 03-16-2008, 08:35 PM

My 06 250 with a 5.4 gets betwee 10 and 11 city, but I drive pretty hard. I did see 15 highway the one time it was unloaded, and gets 9.5 to 10 highway with the camper in the bed and 2000 pounds of boat in tow. a drop in K&N filter did absolutely nothing for mileage. Bigger tires without regearing will kill the mileage. I have the 3.73 LS gears

getpower · 03-17-2008, 12:21 PM

So, how much more does an SD truck weigh compared to an F150?

Pappy19 · 03-21-2008, 10:56 PM

A bunch, like 1,300 lbs more.