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Old 09-14-2010, 04:09 PM
 
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In CR's tests of early 70's big Mopars, they got somewhat better gas mileage than the competition from GM and Ford. To illustrate I will show mpg range to be expected in normal driving and then mpg on a 300 mile trip:

72 Impala: 8-17; 13
72 Catalina 8-17; 14
72 Fury 10-19; 15
72 Galaxie 9-17; 14
72 Marquis 7-15; 11
72 LeSabre 7-16; 12
72 Delta 88 7-16; 13
72 Newport 8-18; 13
73 Marquis 7-16; 12
73 Caprice 8-16; 13
73 LTD 8-16; 13
73 Fury 9-18; 14
73 New Yorker 8-16; 13
73 Electra 7-16; 12
73 Impala Wagon 7-15; 11
73 Country Sedan 7-14; 12
73 Fury Cust Suburban 7-16; 13

first of all, do you feel these differences are significant? would you let a difference of 1-2 mpg's in the 300 mile trip or normal range make or break a decision to buy or not buy?

in real life, where many don't tune their engines or take care of parts like the CR testers, I have read stories of Furies that got no more than 10 mpg in regular driving and EPA tests that made the Mopars actually look worse then the competition; a 1973 gas mileage list showed a Fury to have a dismal mpg rating of 8.7 mpg, worse than anything by it's competition, even an Olds 98 rated better

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
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Old 09-14-2010, 04:12 PM
 
Location: north of Windsor, ON
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Might the Furies and Galaxy have had smaller engines or smaller carburetors?
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Old 09-14-2010, 04:15 PM
 
3,511 posts, read 4,313,440 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. To illustrate I will show mpg range to be expected in normal driving and then mpg on a 300 mile trip:

72 Impala: 8-17; 13
72 Catalina 8-17; 14
72 Fury 10-19; 15
72 Galaxie 9-17; 14
72 Marquis 7-15; 11
72 LeSabre 7-16; 12
72 Delta 88 7-16; 13
72 Newport 8-18; 13
73 Marquis 7-16; 12
73 Caprice 8-16; 13
73 LTD 8-16; 13
73 Fury 9-18; 14
73 New Yorker 8-16; 13
73 Electra 7-16; 12
73 Impala Wagon 7-15; 11
73 Country Sedan 7-14; 12
73 Fury Cust Suburban 7-16; 13

first of all, do you feel these differences are significant? would you let a difference of 1-2 mpg's in the 300 mile trip or normal range make or break a decision to buy or not buy?

in real life, where many don't tune their engines or take care of parts like the CR testers, I have read stories of Furies that got no more than 10 mpg in regular driving and EPA tests that made the Mopars actually look worse then the competition; a 1973 gas mileage list showed a Fury to have a dismal mpg rating of 8.7 mpg, worse than anything by it's competition, even an Olds 98 rated better

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
Nope, I would buy cars for being "cool"! Gas mileage in cars like these is irrelevant to guys like me. I could save some money driving a 4-banger import....... over my dead body!
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Old 09-14-2010, 04:23 PM
 
12,120 posts, read 27,524,856 times
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Default good point us 66, engine sizes

2 Impala: 8-17; 13(350)
72 Catalina 8-17; 14(350)
72 Fury 10-19; 15(318)
72 Galaxie 9-17; 14(351)
72 Marquis 7-15; 11(429)
72 LeSabre 7-16; 12(don't remember if 350 or 400)
72 Delta 88 7-16; 13??
72 Newport 8-18; 13(400)
73 Marquis 7-16; 12(429)
73 Caprice 8-16; 13(350)
73 LTD 8-16; 13(351)
73 Fury 9-18; 14(318)
73 New Yorker 8-16; 13(440)
73 Electra 7-16; 12(455)
73 Impala Wagon 7-15; 11(400)
73 Country Sedan 7-14; 12(351 or 400)
73 Fury Cust Suburban 7-16; 13(360)
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Old 09-14-2010, 04:30 PM
 
3,511 posts, read 4,313,440 times
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Quote:
Originally Posted by rlrl View Post
2 Impala: 8-17; 13(350)
72 Catalina 8-17; 14(350)
72 Fury 10-19; 15(318)
72 Galaxie 9-17; 14(351)
72 Marquis 7-15; 11(429)
72 LeSabre 7-16; 12(don't remember if 350 or 400)
72 Delta 88 7-16; 13??
72 Newport 8-18; 13(400)
73 Marquis 7-16; 12(429)
73 Caprice 8-16; 13(350)
73 LTD 8-16; 13(351)
73 Fury 9-18; 14(318)
73 New Yorker 8-16; 13(440)
73 Electra 7-16; 12(455)
73 Impala Wagon 7-15; 11(400)
73 Country Sedan 7-14; 12(351 or 400)
73 Fury Cust Suburban 7-16; 13(360)
That list is composed of some of the best engines ever to roll of the line from anywhere and anybody!~
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Old 09-14-2010, 04:35 PM
 
Location: Vancouver, B.C., Canada
10,715 posts, read 22,321,366 times
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agreed with a 70's car with a 440 in a fury or 429 in a Galaxie I would carless about fuel economy. if i wanted a bit better mpg I would opt for a small block 340/360 in the dodge or a 351 windsor in the ford but then again a car that large kinda needs the big block torque to get it going and a small block would feel underpowered in such a big car IMO.
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Old 09-14-2010, 04:45 PM
 
Location: north of Windsor, ON
1,903 posts, read 4,725,438 times
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As a lower end car I thought the Fury might have had a 360 (Might it have had a 318?) instead of the 400 or 440 the Suburban wagon likely had. Also as a lower end car I thought maybe there was a two barrel carb; I'm sure the wagon, the NYer, and the GM C-bodies had four barrels on them.
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Old 09-14-2010, 04:48 PM
 
3,511 posts, read 4,313,440 times
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Quote:
Originally Posted by GTOlover View Post
agreed with a 70's car with a 440 in a fury or 429 in a Galaxie I would carless about fuel economy. if i wanted a bit better mpg I would opt for a small block 340/360 in the dodge or a 351 windsor in the ford but then again a car that large kinda needs the big block torque to get it going and a small block would feel underpowered in such a big car IMO.
If you add enough weight big cubes doesn't always mean bad mileage. The small engines actually use more due to over-revving and having to gouge it all the time to get it going. The bigger engines need just a light tap and off ya go! Working it hard or working it with a bunch of power and torque to spare. The engine that can get the car moving with the least laboring is the ticket in large cars and pick-up trucks usually.
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Old 09-14-2010, 04:53 PM
 
Location: Vancouver, B.C., Canada
10,715 posts, read 22,321,366 times
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Quote:
Originally Posted by Axle grease View Post
If you add enough weight big cubes doesn't always mean bad mileage. The small engines actually use more due to over-revving and having to gouge it all the time to get it going. The bigger engines need just a light tap and off ya go! Working it hard or working it with a bunch of power and torque to spare. The engine that can get the car moving with the least laboring is the ticket in large cars and pick-up trucks usually.
trust me i know I have a lifted 91 F250 with a anemic 302 and it chugs gas and makes me wish I had atleast the 351 windsor because they would get close to the same mileage but the 351 would have the better torque down low were it is needed.
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Old 09-14-2010, 05:06 PM
 
Location: SF Bay Area
5,996 posts, read 13,283,477 times
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I'm just happy to see that mileage has improved greatly since the 70's.
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