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Old 05-16-2015, 02:42 PM   #15
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Well our 97 hr endeavor has a 75 gal tank. I'm thinking it would average 8mpg. At that it's 600 miles. Give or take. I know it depends on a lot of stuff.

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Old 05-16-2015, 03:06 PM   #16
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Originally Posted by chasecoffey View Post
So I've got a 97 hr endeavor le gasser. Ford 460 f53 chassis 38ft tag axle. And I'm wanting everyone's opinion on the average fuel mileage. I've not had the chance to take a trip with it yet but I'm trying to get a estimate of the mpg. Thanks for your response.
Plan on 5 mpg and be happy if you get 6. My brother-in-law has a 98, 29' HM with a 460 and gets 6.

2016 Thor Tuscany 34ST XTE, Freightliner XCR, ISB 360hp/800tq. Allison 3000, Koni FSD shocks, Roadmaster 1.75" front sway bar, Safe-T-Plus, DYI air bag flow control valves.
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Old 05-16-2015, 10:52 PM   #17
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On flat road doing 60 to 65 I get around 8.5 (32 ft Damon Daybreak F53 gas 3 valve v10). On mountain grades or mixed hill and flat, 6 to 7. Less if running the genny on the road as well.
2006 Damon Daybreak 3272 w/F-53 @ V10
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Old 05-16-2015, 11:12 PM   #18
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Our 2015 26-ft Itasca Sunstar with a V10 gets about 7.5 on the flats going 60-62mph. No tow.

Measured it multiple times on a month-long trip this year. Never more than 8 unless we had a long-lasting tailwind...which was rare.

It was constantly 7-8. Usually 7.5.
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Old 05-17-2015, 10:39 PM   #19
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3000 mile trip

We just finished a 3000 mile round trip in Utah, Nevada and Arizona Lots of hills and some mountains. 5 mpg up to 8.0 mpg with a average of 7.2 mpg ford 460 V-8 banks ram air and headers. F-53 chassis towing a 07 jeep liberty. A lot will depend on terrain, wind, and weather. I drive 55-60 mph when safe to do so.
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Old 05-18-2015, 10:52 PM   #20
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F53 no toad running 60mpg gets 8mpg. Best ever was 9, worst was 7.
Karlos and Dawn
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Old 05-18-2015, 11:05 PM   #21
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Originally Posted by Mr_D View Post
In our '98 Santara 35' with 460 and tag we got 6 to 7 at the most but we were towing a '95 Honda Odyssey on a dolly.
BTW: for comparison, the Magna weighs 50,000#'s and towing the '05 Odyssey (add another 4,500#'s) we're getting 7.6 mpg with it's ISX. That's an overall mileage and I see about 10 on the flats. So don't let people tell you that bigger rigs get less mpg.
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft
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Old 05-19-2015, 12:47 AM   #22
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I set my cruise control to 63 with the 460 on a F53 chassis. On long straight roads I have registered a tad over 8mpg. On the normal up and down grades I've most often found I'll get between 5-7mpg. My worst mileage is in California. For some reason they keep their winterized fuel in the pumps all year long. There I can count on 5mpg and outrageous prices at the pump. Same goes for my home state of Washington. Only there the governor wants to increase the gas tax by $1 a gallon. I think he's trying to out California California. The big 460 can cruise all day at 70mph, but what's the point? Gas mileage goes down and heavy winds tend to push you around more.

I didn't buy a motorhome to fly down the highway with. When we travel we are in no great hurry to get anywhere. We are traveling at our leisure. I plan on 300 miles a day and cruise at 62-63mph. Life is good when you can take the time to enjoy your surroundings. Besides, coming to a hard stop in bad traffic when you are doing 70 is a bit more difficult than coming down from 63. The extra brakes with my tag axel makes it a little less hair raising when traffic suddenly grinds to halt on the freeway just around the bend in the road that you can't see.
'97 Pace Arrow Vision 36 with Tag Axel, Ford 460 with Banks Power Pack. 2000 Jeep Wrangler Toad, one miniature schnauzer that rules the roost and a wife that enjoys traveling. Retired FTCS (SS) USN and loving it. FMCA#461483
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Old 05-19-2015, 03:26 AM   #23
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Gas Mileage, I don't get no stinkin Gas Mileage,
I just enjoy the ride and fill her up.... YMWV
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Old 05-19-2015, 12:28 PM   #24
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Originally Posted by chasecoffey View Post
So I've got a 97 hr endeavor le gasser. Ford 460 f53 chassis 38ft tag axle. And I'm wanting everyone's opinion on the average fuel mileage. I've not had the chance to take a trip with it yet but I'm trying to get a estimate of the mpg. Thanks for your response.
There is a reason Ford went to the V10. The 460 was a great workhorse. It also was very thirsty. The Chevy 454 was better on mileage. All my customers with the 460 averaged from 5.5 to about 7.5 when driving a tag. Keep it around sixty MPH for good mileage. Some of the speed demons will tell you that driving slow will get you in trouble. That is not true. WE went out west in 2008. I had just retired and we had plenty of time. I drove at 55 MPH. I never had one person almost run over me. Not a single person gave me the 1 finger salute. Of course I stayed in the right lane and pulled over on two lanes when cars started backing up behind me.
1998 Pace Arrow 35 ft. F53 Ford V10 2012 Honda Civic toad
32 years mechanic at Delta Air Lines 15 year motorhome service manager. 3 popups....2 travel trailers....5 motorhomes....loved them all.
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Old 05-19-2015, 04:44 PM   #25
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Buy a diesel, pull my 27.5 ' 5th wheel at 62 mph and get on a flat road 10.5 to 12. Hill in AZ the lowest was 8.5 not using the vehicle computer - they lie...
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Old 05-19-2015, 05:01 PM   #26
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My 8.1L gets 7.5-8.5mpg +-. That's driving 55-62mph pulling 2400lb toad. That's what the computer says. If I figure milage at fill-up it can be as much as 0.3 less. Seems like it's always less when I figure it, never more.
Larry and Prissy Sharp
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Old 05-19-2015, 08:10 PM   #27
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'05 HR Vacationer 37' with 8.1 L pulling '09 Sonata standard 4-down going 62-65 mph. 7 mpg unless climbing over the Eastern Continental Divide: 6.5
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Old 05-20-2015, 05:34 AM   #28
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99 Holiday Rambler F53 Ford. Towing a Jeep Wrangler average driving speed 65, average gas mileage 7.5

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fuel, gas

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