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Old 09-24-2010, 12:08 AM
 
Location: We_tside PNW (Columbia Gorge) / CO / SA TX / Thailand
20,777 posts, read 37,441,293 times
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Quote:
Originally Posted by rlrl View Post
In CR's tests of early 70's big Mopars, they got somewhat better gas mileage than the competition from GM and Ford. T... ... a 1973 gas mileage list showed a Fury to have a dismal mpg rating of 8.7 ...
so in everyday life in the grand scheme of things, do you think those who drove big Mopars actually saved more gas then the competition
SURE (big) Mopars saved more gas My 340 Duster was an econo car, but this list is missing the BIG mopars (Hemi 'Cuda, 440 Charger, GTX, Roadrunner )

actually 1973&4 were about the worst yrs, as Detroit was into SERIOUS de-tuning since 1968 BEFORE they started Improving engine designs. The air recirc pumps took about 30% of HP (maybe a bit less )


Quote:
Originally Posted by iTsLiKeAnEgG View Post
I'm just happy to see that mileage has improved greatly since the 70's.
Not me... 50 mpg since 1976, no dinosaurs (or OPEC) required (grease burning Stealth Rabbits ) Actually my fleet of '96 & '97 Passats get 52 mpg w/ 25 gal fuel tanks!!! (still above 1/2 tank @ 600 miles )
Quote:
Originally Posted by GTOlover View Post
...
The 1973 SD-455 Trans Am was likely the last great vintage muscle car. ...
True... the Chevelle and Mustang stuff had gone Heavy and Square, Camaros lost themselves into tubular buggy eyes, Corvette HEAVY low slung bathtubs, the muscle car era was over (No more jamming POWER into Light go-carts) Maybe Ralph Nader killed the muscle car (SAFETY )

Quote:
Originally Posted by jonnyald View Post
i saw a TRANS AM last week,, lovely sound ... it looked a dream as it leapt up the street. afterwards i could smell the unburnt fuel in the air .
And could barely breath due to the tire smoke in the air

We had a local cruise this summer with over 1000 cars, and the cops weren't ticketing, so there was LOTS of rubber in the air

old boys gone wild
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Old 09-24-2010, 05:34 PM
 
12,120 posts, read 27,524,856 times
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Default if a 72

Chrysler Newport with a 400 V8 got 8-18 mpg in normal driving and 13 mpg on a 300 mile trip, do you think that's pretty good for a 4500 lb car with a 400? to me the 18 mpg at the upper end seems pretty good (it's competition was the Marquis at 15 and the Delta and LeSabre at 16)

and at a steady 30 mph(or whatever speed such a tank gets maximum mileage) do you think the same car can squeak out 20 or a bit more?
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Old 09-24-2010, 06:31 PM
 
Location: Eastern Washington
13,388 posts, read 42,701,155 times
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Somewhere I read that most such cars get best possible MPG around 40 MPH.

You might possibly get close to 20 on a long slow trip, particularly if you put some modern low rolling resistance radials on it and pump them up to about 35 PSI, index the sparkplugs (orient them so the ground electrode more or less points at the intake valve, so the spark gap gets fresh fuel/air rather than the opposite where exhaust gases might tend to linger in the gap), advance the timing a bit from stock, maybe more than a bit then run premium fuel (is that cheating?) good but minimum-viscosity synthetic oils all round, on a long steady trip you might just crack 20.
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Old 09-25-2010, 12:23 AM
 
Location: Northeast Tennessee
7,303 posts, read 22,732,022 times
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A 1972 Olds 98 weighed 4700, slightly heavier than the Newport. Did it say how much the MPG was on it?

Quote:
Originally Posted by rlrl View Post
Chrysler Newport with a 400 V8 got 8-18 mpg in normal driving and 13 mpg on a 300 mile trip, do you think that's pretty good for a 4500 lb car with a 400? to me the 18 mpg at the upper end seems pretty good (it's competition was the Marquis at 15 and the Delta and LeSabre at 16)

and at a steady 30 mph(or whatever speed such a tank gets maximum mileage) do you think the same car can squeak out 20 or a bit more?
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Old 09-25-2010, 06:13 AM
 
12,120 posts, read 27,524,856 times
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Default in 72 CR's tested the

Delta 88 ( but not the 98) I don't remember if it was with the 350 or 400, but the mileage in normal driving was 7-16 mpg, 300 mi trip was 13
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