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Country Discussion Topics
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Motorhome mileage
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Bob    Posted 08-16-2003 at 18:58:21       [Reply]  [No Email]
Looking at some class A motorhomes with 454 chev. engines and just wondering what gas mileage to expect.

screaminghollow    Posted 08-17-2003 at 20:43:30       [Reply]  [No Email]
My 1983 (27foot) Southwind at 65 MPH through the hills and mountains of SW Virginia and Tenn got 11 on the interstate and about 8 off the expressway. Wish my wife's pick up did that good.

Tyler(WA)    Posted 08-17-2003 at 13:18:14       [Reply]  [No Email]
Doesn't matter the size, carberated 454 will get 7-8 mpg but a Vortec (90's vintage) has independent computer controled fuel injection and will get you 10-12 mpg. Someone always claims they have a Dodge 440 that gets 14+ mpg but they never can show you the gas receipts to prove it.

I had a Dodge 440 in a 27' class C and it got 6 mpg whether you were pulling a trailer up a mountain or coasting down a mountain with no trailer. 50 or 70 miles/hour, still the same 6 mpg.

After I swapped to a 360, I started getting 7-9 mpg.

We're looking at a 31' class A with a carberated 454 and we know the owner. He's telling the truth with receipts to show it gets 7-8 mpg.

Funny how you don't need proof to back up what's expected anyway.

Ron/PA    Posted 08-17-2003 at 07:09:28       [Reply]  [No Email]
Can't help with the GM, 454 but my 27 foot ford 460 runs anywhere from 9 to 12 depending on the mountains, and wind.

ret    Posted 08-17-2003 at 10:42:00       [Reply]  [No Email]
my 84 23 ft Ford with a 460 got nine at the best going down interstate 5 which is flat most of the way where we went. Cross country with a car behind and loaded up, it was running not over 6 from Ca to Va. That was expensive.

ret    Posted 08-17-2003 at 05:55:18       [Reply]  [No Email]
you didn't say how long. Makes a bigger difference when you get one 30 ft or so. A friend just bought a new 31 ft er with a ford motor, he said 6 was all. Pull something on the back and it really drags it down. He does have a car on the back. If you could get 9 , you would be really lucky regardless of size

Good Lord    Posted 08-17-2003 at 00:37:32       [Reply]  [No Email]
I have 2 vehicles with 454 engines. One is a motorhome, the other is a one-ton 4x4 p/u that pulls the stock trailer. Both get the same, +/- 9 mpg. It gets a little spendy.

Jimbob    Posted 08-16-2003 at 19:24:42       [Reply]  [No Email]
Some large motor homes with gasoline engines get as low as 6 MPG. Diesel engines get much better, but the extra cost of the diesel can buy a lot of gasoline!

Ron,Ar    Posted 08-16-2003 at 22:09:13       [Reply]  [No Email]
Our gas prices are higher than diesel.I wouldn't expect better than 10mpg on anything very big.Just too much wind resistance.

JDK    Posted 08-16-2003 at 19:10:35       [Reply]  [No Email]
Had a carbed 440 Dodge Winny,22'"Box" yrs ago.Got around 8-9 in open country.I would imagine modern aerodynamic fuel injected rigs do a bit better.

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