With $4 gas, what do you get for mileage??????

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With this in my Duster, (a 318 4bbl Police motor with headers, mopar intake, 340 sixpak cam, 650cfm carb, etc,) I get 12-15mpg, or up to 20mpg on really long freeway trips.
Newalternator.jpg


I just wish my gas gauge worked.
 
GoodysGotaCuda said:
10mpg out of my 318. I run the crap out of it when i drive it, if i drove like a old lady i bet i could get 15mpg if i stayed out of the secodaries....but thats no fun! Here in florida if you do 55 on the highway they'll run you off the road!
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My 318 w/ThermoQuad gets 17+/-.
I live in Texas and if you run 55 on the highway you get rear-ended.
We like 85-90 MPH cruising.
 
1997 Ram club cab, sb 2wd. 318 headers, new cat, magnaflow exhaust, e fan, tonneau cover
Best is 17 city 20 MPG highway, even with the OD, the thing needs another gear, anything over 65 and it is turning more RPM then it wants to

Dart Lite.... Not sure yet....hopefully well into 20's
 
i get the same mileage as last years $3 gas


318 + 904 + 3.91 = 12
 
Yuri said:
With this in my Duster, (a 318 4bbl Police motor with headers, mopar intake, 340 sixpak cam, 650cfm carb, etc,) I get 12-15mpg, or up to 20mpg on really long freeway trips.
Newalternator.jpg


I just wish my gas gauge worked.
Click to expand...


Hey Yuri,

I have a Dual Snorkel air cleaner with a 318 4 barrel pie tin that I am trying to sell with fresh orange paint...

Thought I would mention it, since you are running a single snorkel setup

:cheers:

BTW, 11-13 mpg total tank average with 318 (XE268 cam, headers, Holley 650 DP)+904+3.21s in my Duster. Up to 18-19 at times on the hwy.

The cuda gets roughly the same with a stock 340+727+3.23s

My 2007 Charger R/T Daytona averages a full tank rating of 16-18 and gets as high as 28-30 on the hwy cruising at 65-70. Hwy milage is found when the motor powers down to four cylinders. 5.7 Hemi w headers, cats, flowmasters, Diablo programmer, AFE intake. 4,250 lbs with no passengers and can run 13.5 @ 103. Not too shabby.

-Justin
 
Maybe 200 miles on it now and just did a 50 mile jaunt and on a 500+ horse 440 in a 73 duster i was amazed. I'd cruise at 55 or so then hammer down on it and run it to 3500 rpm then back off. Back and forth. I filled up before i left and filled up when i returned and it took 3.66 gal. By my figures that comes out to 13.66 MPG. One half 110 and the other half premium. I'm VERY satisfied.
 
360 ~370 HP/ A833OD / 3.55 gears in a 68 Barracuda. 17-18 mpg around town and 21-22 mpg on the hiway.

3.9l v6 / 44RE / 3.91 4x4 Dakota Club Cab. 16-18 mpg around town and 20-22 mpg on the Hiway.

2.4 4cyl / autostick / turbo PT Crusier. 21-23 mpg around town and 25-26 mpg on the hiway.
 
the daytona gets about 25mpg average, thats not with very good driving though this tank im trying to see how good i can get so far the 'traveler' is reading 28mph avg.

the dart got 13mpg :angry7: no power, and no fuel ecomy..something wrong there. as for the cuda i havnt been able to drive it enough
 
bottom line? Don't know and really don't care. I have a decent mpg daily driver 20/32 mpg. Really don't care what the duster gets. Its probably around 8-10. Its still a cheap prescription for mental health.
 
My daily driver, 87 K car. Gets about 23-25 around town. I don't
take it out on the highway. The wifes 2000 Dakota R/T will get
about 18 mpg on the highway at about 62 mph. Only about 12 around
town. The Duster in street form will pull 14-15mpg's on the road.
That's with the 340/727 and 3.23 gears in the back. I would not
want to see what I would get with the 4.30s that I use at the
strip and stomping the kids around town.
 
69 Dart 340 Swinger A727/4.10 rear gets 9-10 mpg around town, but paints 2 really nice long black lines every time I leave a stop light!!:cheers::cheers:
 
My daily driver 2000 grand caravan with 3.8 litre and o/d will get around 15-16 city. At 55 mp hour and ac off it gets 33-34 mpg. Do 75 mph with ac on full blast and it gets 24 mpg.

My cop Caravelle used to get 18-19 mpg highway and 12-13 city with 2:94 318 4bbl and 904.

My Dart when on the road got over 20 mpg with 318 2bbl while towing a 2500lb trailer!
 
One thing we might all do to help out our borderline recession and the high price of gas is to BUY AMERICAN MADE PRODUCTS ONLY. A major factor of the high price of gas is a booming economy in both China and India (2 of the most populous countries in the world). Many of the workers there are buying cars for the first time and busy factories are using large amounts of fuel to operate. American demand for oil has been almost the same for the last 5 years. Buying product made here will put money back in our economy so stockholders will have something to invest in (instead of commodities) for example: crude oil and it will also reduce the amount of fuel these foreign countries need to run their factories. They simply won`t be as busy. In turn employees there will not be able to afford cars if they`re not working as much. I`m sorry about sacrificing their economies but our economy needs fixing...bad.......and fast! Stocks are down ,inflation is up, and the last time I checked employers are not giving cost of living increases commenserate with inflation (especially the price of gas). Sorry about the eco-political rant but this issue is important. Do you think gas prices will ever go back down to a more affordable level? Usually when prices go up, they don`t ever come back down.
 
408 stroker with 727 + 3000 stall in 4.10:
Using Holley DBl Pmp 750 = 8 mpg hwy @ 55mph (running rich)
Using Carter 600 Vac Sec = 14.1 mpg hwy @ 55 mph

a BIG difference with nothing more than a carb change. Best of 13.42 with Carter, and 12.88 with holley. The holley probably has more HP with tuning and jetting down. That and timing and I'm hoping for under 12:5 with traction limited street tires.

Would like to switch to 3:55 or 3:73' to help cruisability and mpg, while not hurting ET too much.

Oh yeah, It has 9.6:1 compression with aluminum heads, and I am running 89 octane (mid-grade!)
 
I'd say thats pretty impressive mileage for your combination. After reading through the posts it seems that mileage is more directly related to rear gear ratio than to engine combination. You guys have some pretty hot motors
that get respectible mileage if you keep the rear gear in the 3:55 range or lower.
I see that DGC333 has a 833-od and gets 22/hwy and good mileage in town too. That's great! That od is the way to go.
Dusterdon is right on. Our cars are good therapy and mileage doesn't really matter.
Keep the posts coming! Toolmanmike
 
Daily driver (07 Sonata) gets 28 city, 40-43 highway. The Dart with a 273, 3 speed automatic and 2.93 gears gets 21-22 highway but unlimited Smiles Per Gallon:cheers:
 
my dad is driving my 78 volare 225 3spd man = 27mpg
my moms 64 valiant 225 auto=23-24mpg
my 86 ranger 2.3 5 speed = 28-30mpg
my wifes 03 excursion 7.3 auto=15-18mpg
 
never driven my duster more than a mile, so im not sure what it does... (360/4bbl/904)

my rx-7 does between 18-21mpg city, on the interstate i have squeaked 30mpg on a trip to florida.
but my daily, as ugly and hard to respect as it is,

38mpg city in my 93 civic 4 door automatic.
i drive 400+ miles a week JUST to work and back...

after riding around 20 mpg or so for so long (40 miles 1 way to work), i almost did a BACKFLIP at the pump the second time i filled my civic!
 
Ain't it ironic......

My fastest vehicle gets the best mileage.
Honda CBR 1100XX - 40 to 42
My slowest gets the worst.
Dakota R/T- 11 to 12 towing. 10 when I was in the "Return To Brice Rd Caravan" from Year One in 2003. I passed everybody!
 
My '68 GTX (440, auto, 3.23) was my daily driver during the first "gas crisis" of 1973-74. The guy I bought it from ordered it with the 3.23 because he was stationed at Ft. Riley, KS and was driving back to LI to visit whenever he could.

I was driving it back and forth from school in Daytona Beach to LI for summer breaks. I wanted to cruise at 60mph to monitor my progress on I-95.

I was using a Holley 750 (small primaries, large secondaries). I put a stiffer spring in the vacuum secondary can to open them at around 65mph. I put a set of 15 inch G-70 Goodyears on the rear. The car was loaded with my earthly possessions, books, wheels and tires, etc. and I was getting 20-22 mpg on I-95.

As an aside, I remember that my brother ('70 Superbird) and my father would take their cars to a local gas station in freezing rain, sleet, or snow before the sun came up, wait in line with the engines shut off, to buy $2 worth of gas. Ironically, in Daytona Beach at that time, we had plenty of gas. Some of the local stations just closed at 5 or 6 p.m. instead of 10-midnight. Interstate stations were always open. My father, an airline pilot, remembers seeing oil tankers anchored low in the water around Delaware Bay. We could never understand that. It was a few years ago that I found that the "shortages" were really caused by the good ol' U.S. government. Nixon put wage and price controls on the economy. The oil companies purchased oil from OPEC at the high-cost prevailing rate, but would have to sell it at a loss in the US because of the price controls, so they warehoused it in tankers or re-sold it overseas. To further compound the problem, the government devised an intricate, impossibly complicated gas allocation scheme. Any place that had a remote possibility of mass transit (such as LI) had reduced allocation. Places like Florida, whose economy survived on tourism, were allocated much higher amounts of gas.
 
:cheers:i must be doing it wrong mine gets 10 gallons per mile lol:snakeman:
 
Longgone said:
One thing we might all do to help out our borderline recession and the high price of gas is to BUY AMERICAN MADE PRODUCTS ONLY. A major factor of the high price of gas is a booming economy in both China and India (2 of the most populous countries in the world). Many of the workers there are buying cars for the first time and busy factories are using large amounts of fuel to operate. American demand for oil has been almost the same for the last 5 years. Buying product made here will put money back in our economy so stockholders will have something to invest in (instead of commodities) for example: crude oil and it will also reduce the amount of fuel these foreign countries need to run their factories. They simply won`t be as busy. In turn employees there will not be able to afford cars if they`re not working as much. I`m sorry about sacrificing their economies but our economy needs fixing...bad.......and fast! Stocks are down ,inflation is up, and the last time I checked employers are not giving cost of living increases commenserate with inflation (especially the price of gas). Sorry about the eco-political rant but this issue is important. Do you think gas prices will ever go back down to a more affordable level? Usually when prices go up, they don`t ever come back down.
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Good point. I know you meant north america including Canada. The strange thing is that we are paying over $5.00 a gallon here in Canada, and our dollar is nearly at par with the U.S.A., and your gas is a little over $4.00 a gallon and we produce a lot of oil and export it to the U.S.A. especially from here in Alberta. Today's price was $1.29 per liter here, which is close to a U.S. quart. Both our governments have to get their heads out of their butts! And by the way, my '69 valiant 225 auto gets 21 mpg highway @60mph with 2:76 gears. My wife's '07 focus gets 42 mpg highway so we use that for trips, I still drive my valiant everywhere else, I just like it better. The '70 dart in my avitar got about 20 mpg @60 mph, 318 auto 2:76 gears, and 10 years ago my '69 coronet r/t 440 4 speed 3:54 dana 235-70-14" tires got 14mpg@60mph. My tecumseh engined lawn mower gets about 150mpg @1/2 mph.:toothy7:
 
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