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Keithq
Dodge Dakota
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7/19/2004
03:10:31
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 Subject: RE: Gas mileage improvements for 4.7l
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My freind has a 1998 Dakota sport. I borrowed it last year to move some furniture across country. Doing 110-1`15kph (70-75mph) it got 25mpg.
We just rebuilt a 1991 Dakota Club Cab 4x4 and at 800km since rebuild, on our first 'test' run, we went 175km, and averaged jut under 25mpg. This truck has the 318cid (4.7l) V-8. This number should still improve after 20,000kms or so when everything is fully broken in. We built this truck specifically to improve fuel economy, but the cam we used is rated at around 280hp, with torque peak in the 2800-3000rpm rang.
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CThomp
*GenIII*
7/19/2004
08:30:37
| RE: Gas mileage improvements for 4.7l
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Keithq: A 318 is a 5.2L not a 4.7L. A 287 is a 4.7L.
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1 more
Dodge Dakota
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7/19/2004
13:27:58
| RE: Gas mileage improvements for 4.7l
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I just wanted to be post # 63
thanks
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jasonsdakota
Dodge Dakota
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7/22/2004
01:23:26
| RE: Gas mileage improvements for 4.7l
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00 4.7 awd (not even a 2wd mode) mixed 13-13.5 but long term computer readout 13.0
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Kingfisher
Dodge Dakota
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12/16/2004
15:28:18
| RE: Gas mileage improvements for 4.7l
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Possibly people who install shorter tires and/or lower gears and think their gas mileage has improved are only turning their odometer faster and going the same distance or less.
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Amos
Dodge Dakota
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12/20/2004
17:55:49
|  RE: Gas mileage improvements for 4.7l
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HOLY MACHERAL there, Sapphire!!!
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Craig
Dodge Dakota
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7/28/2005
22:53:01
| RE: Gas mileage improvements for 4.7l
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Yes, I wonderhow many are forgetting to do the math with their differing tire sizes and gear ratio.
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Kowalski
GenIII
7/30/2005
09:41:37
|  RE: Gas mileage improvements for 4.7l
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Tire size will affect the math, a gear change will not. The odometer in our Daks is driven by a tone ring in the rear and is unaffected by gear change; unlike other vehicles where you are used to seeing it driven off the transmission. Good point though.
Lead, follow, or get out of the way
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4merjarhead
Dodge Dakota
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8/01/2005
23:24:38
| RE: Gas mileage improvements for 4.7l
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The biggest ailment to truck fuel mileage is wind resistance caused by the tailgate. Put a tonneau cover on (the inexpensive, soft kind will do) to achieve the best mileage for your buck. I have a 02 4.7L 2WD with Gibson headers, AEM intake, Flowmaster exhaust, Viper performance module, and Tuff Tonneau cover that gets between 21 and 24 mpg on the freeway and 17 around town.
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Craig
Dodge Dakota
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8/02/2005
09:20:02
| RE: Gas mileage improvements for 4.7l
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I have got a 2003 4x4 QC, stock so far with auto tranny. I have a cab high topper and I carry about 400 lbs of tools all the time. What is the best thing I can do to this year truck to get better mileage. I get about 13 to 13.5 average. In town and out of town. I drive about 75 interstate.
Do you think an electric fan instead of the viscous would be the biggest and then what from there?
Thanks for any help
Craig
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scottyboy
Dodge Dakota
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8/19/2005
21:54:14
| RE: Gas mileage improvements for 4.7l
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I just returned froma 500 mile trip to Indiana with my Ducati in the back of my 01 2wd 4.7 Club cab with 3.55 antispin, 5 speed manual. I have logged every penny in expenses, including every fuel stop for 54,000 miles. I get 18.75 with a load, uncovered @ 80mph cruising, actual average about 70mph.
With the tonneau in place, unloaded, about 2.5 mpg better. The only options are a Borla catback, and R/T suspension with Bilstein shocks. City mileage is around 16.75-17. This truck replaced my 1990 V6 Club cab, with 175,000 trouble free miles (except for peeling paint, warranteed by Dodge at 90,00 miles for $100.00 deductible.)
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mopower
Dodge Dakota
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8/20/2005
09:25:15
| RE: Gas mileage improvements for 4.7l
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Message:
In my opinion spending money to get better mileage out of a truck, especially a 4x4 is an exercise in futility. You can spend hundreds of dollars and maybe pick up a mile or two to the gallon at the most. I always ask myself when I see gas saving mods (aside from tune-ups)…how long will this take to pay for itself? Most aren’t worth it and will only empty your wallet.
I have an ’02 4x4 QC 4.7 auto and it doesn’t seem to matter how I drive it much either…A/C on or off, drive it real easy on take off or normal, it still gets close to the same MPG irregardless. It does ok on the highway though. But like any 4x4 truck or SUV it will never be a gas miser or even come close to getting great gas mileage. It’s just the nature of the beast…
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Craig
Dodge Dakota
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8/21/2005
16:28:16
| RE: Gas mileage improvements for 4.7l
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Message:
Thats for sure.
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mopower
Dodge Dakota
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8/21/2005
18:39:38
| RE: Gas mileage improvements for 4.7l
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I should add too though that I found as far as highway driving is concerned I do get better mileage when I lower my speed and set the cruise to 55 MPH. I'm the slowest vehicle on the highway, but it really does seem to help.
'02 QC 4x4 4.7 auto 3.92
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Craig
Dodge Dakota
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8/21/2005
19:09:03
| RE: Gas mileage improvements for 4.7l
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Message:
mopower, what kind of mileage do you get at 55 mph?
Craig
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Robert Brown
Dodge Dakota
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3/16/2007
14:00:12
| RE: Gas mileage improvements for 4.7l
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Message:
Hey, after looking through all your posts i thought id have to add my two cents. currently have a quad cab 2004 dakota with the sport package, has lots of crome and the trick filler cover and 31"tires. its a caalifornia truck so it has 4 cats, nice restrictive flow. when i bought it it got 17mpg city gas went up to $3.00 a gallon so i added a throttle body spacer which said it increased power (i does i can feel it) and increase gas mileage 3 mpg. it got 3mpg worse. the 4 cats dodge puts on are by far the worse at decreasing gas mileage. luckily im an alaskan native and only stationed here in cali and will be removing ALL unnessesary exhaust parts shortly. so far the best increase in mileage ive gotten is reducing my lead foot,
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markheth
GenIII
3/27/2007
13:58:01
| RE: Gas mileage improvements for 4.7l
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Message:
The best way to increase your gas mileage in a dakota is to start using the Imperial Gallon for your calculations instead of the US gallon (4.54 Liters compared to 3.78)...
That will give you about a 4mpg gain!!!
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Breadman2
Dodge Dakota
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3/29/2007
15:25:16
| RE: Gas mileage improvements for 4.7l
IP: Logged
Message:
2004 Sport Plus
4.7 5sp man. 3.55 lsd rear tow pkg hd cooling
ex cab soft tonneu cover
33000 mi
12 or 13 around town
20 to 21 on thruway @ 75 on way to saranac lake 350 miles
Same trip pulling a tandem axle u-haul van 9 to 10 loaded with 2500lbs 12 empty on the return.
I posted as Breadman but I lost my password and they can't locate my acct. John
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MR ED
Dodge Dakota
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1/19/2009
00:49:12
|  RE: Gas mileage improvements for 4.7l
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Message:
I am looking to replace my stock cat & muffler with after market ones does any body know witch set up will give me better mpg. On my 4.7 2002 1500 Ram regular cab with 20 inch tires. I drive with cruse set at the speed limit and try to keep my rpm at 2000 or below must of the time
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TexasTodd
GenIII
1/19/2009
15:27:03
|  RE: Gas mileage improvements for 4.7l
IP: Logged
Message:
Hey Ed,
What's up?
Are you replacing this just for a mpg increase? Save your money then.
Is the cat clogged? Is is under warranty still? ( 80,000) at least. A cat back will RARELY increase any mpg's.
Drive it like its paid for!
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