On Mon, 27 Dec 2010 12:35:30 -0600, dpb wrote:

The Daring Dufas wrote:
On 12/27/2010 6:52 AM, Stormin Mormon wrote:
...

... The 8 cylinder 318 engine got about 10 1/2
MPG. My Mom's car, a plymouth with slant 6, got about 18
MPG. I liked the slant six engine. Also easier to work on,
with the starter on top.


You probably had a cracked dual ballast resistor, a common
problem with the early units. A lot of guys carried a spare
ballast resistor in the glove box. :-)

TDD

Something was grossly wrong, then...the 383 would do 18 mpg at highway
cruising speed in my '69 Charger w/ the 4-bbl Holley...

The 318 in the mid-70s pickup even w/ the axle ratio that made it run at
fairly high rpm compared to passenger vehicles would easily manage 15-16.


A heavy right foot could take a 318 dart down to well below 10, while
a good driver sould squeaze out well over 25 from a slant six if he
was carefull. My tuned 225 and 170 could both get 20 or more, but my
foot was not generally light in those days - gas was cheap, and 16 to
18 was doing pretty good on the sixes.

My 318 ramcharger, from the factory, got about 8 in the winter around
town, and 12 or so on the highway.
After I re-calibrated everything I could get 12 or more around town in
the winter, and 20ish on the highway - and I could plow snow all night
on half a tank or less.