I've read through his posts before. I quite enjoy reading them

 

The drag truck will be getting 400cc from the p-pump, I can't wait to drive it

 

He hits 401 whp in this run

 

96 cclb srw auto 3.55's.
Haven't longed a good unloaded yet, but seems to be 15-17 with mix driving.
70mph with a 6k# 26' tavel trailer was 10-11

 

F-350, 6.7L, 3.55 gears, 33 inch tires (275-70R 18) 4X4
Just got back from a 2,200 mile trip, 70 mph high way speed averaged 9.5 mpg for trip. Pulling 34ft fifth wheel trailer with a motorcycle trailer and a touring HD motorcycle. Estimate 15K.

 

1997 4.10 gearing auto, SCLB F350 dually, pretty much completely stock. I get better milage towing than empty...

towing 4.5K w/uhaul trailer ~16.8 MPG at last measure
empty, not sure, maybe 12 or 13

Reason seems to be all about RPMs, I go 55-60 with the trailer and get good mileage. Without the trailer I do 74-80 and get crap milage. That said though, I am wondering why I don't do better unloaded.

 

'97 F-350, auto, CCLB, 4.10 gears, dually. 14-15 empty. 12 hauling the 12,000lb work trailer.

 

Well for the few tanks I was driving, I managed to get about 17 to 17.5. That's been on probably 6 or 7 cylinders the whole time though (due to worn injectors.)

I should have the money to send my injectors to Jim soon. I'm wondering how much better I'll get with all none worn out injectors and all 8 firing! Like I said earlier, I'd like to get about 20 average so I think that's probably doable!

 

Right when I got the truck (and before the TC packed up) I got 17.5 mpg hwy, and that was with a pretty steady fuel leak.

Once the TC is installed and the fuel system is done, I'm aiming for 19 hwy!

 

on a good day 8 to 10 MPG with light foot, no load or tow, and I have checked the obvious and NO improvement.