overdrive possible?

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On Mon, 17 Apr 2006 19:09:33 -0600, ".boB"


While I would not call a Dodge a pig, they have never been known for fuel efficency. ----------------- The SnoMan www.thesnoman.com
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Never had a '64 225 slant six, did you (37 mpg)?
Or a '79 318 D-150 (21-23 mpg)
Or a 68 Road Runner (17 around town and 23 highway)
I've never had a Mopar that got bad mileage unless it was from a need for repair or a lead foot.
--
Budd Cochran

"Our Constitution was made only for a moral and religious people.
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On Tue, 18 Apr 2006 09:55:09 -0600, "Budd Cochran" <mr-d150@preciscom SPAM.net> wrote:>Never had a '64 225 slant six, did you (37 mpg)?

My '76 318 Ramcharger, when I got it new, could not get as much as 8MPG, Canadian. After fighting with the dealer for a month or two, I redid the carb myself, adjusting the power needle and all that stuff - got it up to over 23 on the highway, about 14 in town, and it just sipped gas plowing snow.
The 264 or whatever in my Fargo truck would do over 27 on the highway, and the 241 Hemi Coronet topped 30 on occaision.My slant sixes generally did between 17 and 21, but I never babied those. The accelerator pedal was operated like a switch. ***
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On my D-150, being a 79, it lost the smog stuff, got a 1972 360 degree two-barrel intake / carb and the vacuum curve was carefully set for full in at minimum vacuum without causing ping.
The /6 had a mechanical advance recurve with 93 octane fuel and all the advance it could handle.
The Road Runner got it's best mileage whenever anyone but me drove it ( my mom , especially), but then, I was but 21 years old at the time and gas was 35 cents / gal. US.
--
Budd Cochran

<clare at snyder.on.ca> wrote in message
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On Tue, 18 Apr 2006 14:18:13 -0600, "Budd Cochran" <mr-d150@preciscom SPAM.net> wrote:>On my D-150, being a 79, it lost the smog stuff, got a 1972 360 degree

Runner had wide ratio 4 speed and the long gears? Friend still has his all original '69 runner with that equipment. Driven RIGHT, it would do high 20s on the highway. Push it a bit, and you could easily get 10. EASILY bury the needle in third. ***
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<clare at snyder.on.ca> wrote in message

383, 727, 3.23 axle. Lowered 1" in front, belted F70-14 tires, the original type of Wynn's Friction Proofing in the engine, Sunoco 260 and all the advanc it could handle. Best quarter-mile 13.65 / 105 in second.

a run so the shift would be complete at 6000. Second was good for 120 and high would bring the counterbalance end of the speedo needle to 30. Man!!! what a ride!!!!
Budd
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On Tue, 18 Apr 2006 09:55:09 -0600, "Budd Cochran" <mr-d150@preciscom SPAM.net> wrote:>Never had a '64 225 slant six, did you (37 mpg)?

THese are not reality. The only maybe here is the 79 P/U, the rest are way out they in left field. I remember road runners were new and the MPG was about half than amount and I owned a few slant sixs that strain to make low 20's a few times and a 170 valent that did 23 once but 37 MPG with a 225 is pure bull. ----------------- The SnoMan www.thesnoman.com
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Yes, they are. My personal values and religious beliefs forbid lying.

No, they aren't. Btw, with a bed cover, the truck hit an alltime best of 25 mpg between Laramie WY and Moab, UT . . .yep, in the Rocky Mountains.

And how old were you and how far in the carbs did you stick your foot? My mother and sister got the high mileage, I got 11-14, except of Friday nights whern I got 4-5 mpg for each 1/4 mile.

No, it isn't. Chrysler got 27 mpg out of a bone stock slant in 63 in the Mobilgas Economy run on BIAS PLY TIRES. Mine had a few special mods and adjustments: tight valve lash (0.008" IN / 0.010" EX), water vapor injection, maximum intial advance, 93 octane fuel, steel beltradial tires @ 35 psi, lowered 1 1/2" in front, 3-speed manual trans with a 3.23 axle and 294,000 miles on it.
Just because it didn't happen to you does not mean it cannot happen to someone willing to do what it takes: experiment and test.
Budd
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On Tue, 18 Apr 2006 14:29:41 -0600, "Budd Cochran" <mr-d150@preciscom SPAM.net> wrote:>

Sounds like my '63 170 V200 Custom 4 door. Lowered about 2" all around, Hemi Cuda shocks, C70-13 polyglass tires, head shaved 20 thou, intakes at .005, exhaust at .010 (adjusted religously), dist recurved to roughly mimic the curve on the 273HO, 225 carb rejetted, and running NippondensoEPR25, IIRC plugs. The only other plugs I could keep in it were Champion N3G fine-wires. Mine had the 3 speed push button slush-box but put 206 HP to the rear wheels on Sunoco 260. If driven hard (the way I usually did) it drank fuel at the rate of something like 12-14 MPG Canadian. Driven reasonably mabee twenty, and the odd time I got it on the highway for a good run (like down to Letchworth NewYork with some friends to keep me sane) mid to high twenties. I may have squeezed 30 out of it once or twice. Keep in mind, this is the big Canadian Gallon - and an automatic.
My '69 Dart custom 225 was considerably milder, and a mid-winter trip to Alberta averaged in the high 20s, including the 104mph dash across the corner of Wyoming. Car only got shut off once for more than an hour on the whole trip (3 drivers). Overall mileage was mabee 22 average when around home - with 75000 or so miles on it when I got it and closer to 225,000 when I sold it.

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<clare at snyder.on.ca> wrote in message

The Imperial gallon is 20% larger than a US gallon so your twenty mpg Imp. becomes 24 mpg US.
Ya should gone the whole route on the head 0.090", then your CR would have gone up a full point ( 9.4:1) and no valve interference with a stock lift cam. I had a 65 engine with the head milled the full amount and it ran great on 260. I used Champion N-10Y plugs with no problems.

That figures to 26.4 US mpg.
I made a weekend trip once in my RoadRunner from Indianapolis IN to Nauvoo IL. Five adults, weekend luggage, 552 miles, 6.7 hours, 13.42 mpg. ( what'll really make the younger folks mad...gas costs for the trip west, $13.95 US) Most of the time, between towns, I cruised at 115-120 mph. Not bad mileage considering I had the secondaries (Carter AVS) open most of the time.
Budd
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and
Sorry Budd, but you got your math backwards. If the imperial gallon is LARGER as you say, then the mileage goes DOWN when converted to US, not up as he had 20% more fuel to obtain his mileage. Take away 20% of the fuel and you take away 20% of the mileager so he was getting 16 mpg US which is about right for that engine under "normal" driving.

great
No it doesn't! If he could get the same distance with his fuel usage in the same number of US gallons then he would have to be getting 26.4 mpg but that is not what happened. He was using imperial gallons (at least for most of it).

what'll
US)
Me thinks the BS is getting a bit deep.

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