Hey guys, I know we have all seen dozens of threads on here regarding fuel mileage.....mine is different.
I am going to sell my 07 model Class A motorhome and since I dont want to get out of Rving all together I am going to get a travel trailer, atleast 26' but would prefer a 30-32' in length. The ones I have looked at all range in weight around 6,000 lbs dry weight, of course I always run the RV's full of water and gear so add another 1500-2000 lbs to teh total weight. I have an 89 Ford F250 extended cab long wide with a 460 fuel injected, C6 transmission and 3.55 gears, 2 wheel drive. I know of course it will not have a problem pulling the trailer, it will just grin and keep going, however, I was curious about the fuel consumption on long trips.
We usually only use the RV during the spring and summer months, sometimes in the fall but its always nice weather, so I will be getting the "summer mixture" gas and in favorable conditions. With my motorhome running the 30 valve V10 with the torqshift 5 speed and I think it has 4.56 gears I get anywhere from 5.5-7 depending on weather or not I am running the generator as well. I'll probably never run it above 75, probably realistically around 68 -70 mph.
I was wondering if anyone pulls their 460 like this and what kind of fuel mileage I could possibly expect to get out of it. Thanks guys

 

it is the same question and the answer is the same 4-8 MPG pulling at around 55 MPH !

 

I beg to differ on the reply, everyone else is asking about why their fuel mileage is so bad, I already know why my fuel mileage is so bad, I have a big block Ford that will pull a house down but gets really thirsty doing it........I wanted to know about what to expect pulling. I have really only pulled fifth wheel and travel trailers with diesels, I had a 99 Dodge with a 24V cummins that would get 10 taking the wind, and my 08 superduty with 6.4L powerstroke would get between 6-7 pulling a 14K lb fifth wheel. That helps though......I honestly figured it would be something similar to what kind of mileage my Class A coach was already getting, I get between 11-13 highway, thats running empty and keeping the speed under 70 and not taking the wind of course. Thanks

 

Using son's 89 F250 SC long bed 3.73 gears(I think) pulling loaded car trailer (approx 6000#) and loaded truck. Would get 7-8 between VA and NY.

 

my apologies

 

My 1987 Ford 26ft class C Diesel camper, non turbo 6.9L diesel with th C6, 3.54 (Dana 70 axle) gets ~11-12mpg average, highest it got was on both east and west coasts at 13mpg! That's on the cruise control at 60mph. I never ever go any faster than 60 in the camper! I have only onces been over 60 to see what was the top speed, and it's 75mph.


I've never had a 460, but from what I read, you won't get anything more than 6mpg pauling heavy with it.

 

Too late to edit: also C-6, EFI and running 55-60 sometimes as high as 75.

 

I didnt really figure, I just wanted to make sure I wouldnt be looking at a constant 3 or 4 really. Once I did have a 97 1 ton crew cab 4x4 chevy with a 454, 4.10 gears and a 4L80E transmission, I pulled my fifthwheel out to SW oklahoma for hunting, the trailer weighed around 7K lbs, I got a constant 5 - 5.5, I was floored because the trailer wasnt that heavy and the wind wasnt really up. Now grant you, I didnt have it in OD, I pulled it in 3rd gear all the way out and back but I didnt want the transmission to over work itself. Odly enough, my older Ford with the larger motor, 3 speed auto gets better mileage, but it has different gears and isnt lugging around all the extra weight from axles and transfer case and extra doors.

 

Ummm,
Not related to fuel mileage, BUT you stated that you were planning on towing at 68+ mph.

Not sure if you realize this or not, but most all trailer tires have a mazimum speed of 65 mph. If you go to the towing forum, you will see that a lot of people have issues with blow outs and the damage that occurs around the fenderwells.

Just a concern in case you did not realize this limitation.

David

 

Most 460 MPG engines posts I seen usually run around 7 to 9 MPG empty or loaded. My E350 Bus gets 8.5 almost all the time, thats even loaded or empty. Some have said they get over 12MPG but I don't know how accurite that is

 

See my sig for my truck details (3.55 gears); while I haven't pulled a camper at highway speeds, pulling farm wagons, a bean head, and anhydrous tanks, my truck would average in the 5-6 mpg range.

I know, not a very good comparison since I'm not dealing with the air resistance, but it's what I've got for you...