Gas Mileage
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Laughing Gas
Joined: Jan 2002
Posts: 1,008
Likes: 1
From: Tucson
Gas Mileage
67 F-100 Camper Special, 352, 2bbl, 4spd, 3.50 rear end
Well, I finally did a mileage check on my pickup and I am getting 8.9 mpg. How does this compare with your truck? Mine is a daily driver with relatively short, in town runs. I don't have a very heavy foot but I do leave it idling for ten minutes or so on those cold Arizona mornings. The engine is timed correctly (a little advanced at 10 btdc) and it runs very well.
Years ago I had another 67 with a 300 6 cyl. As I recall, it got terrible mileage too. Anyhow, I'd drive this truck if it got 5 mpg but I wish I could do better than 9! Any thoughts?
jor
Well, I finally did a mileage check on my pickup and I am getting 8.9 mpg. How does this compare with your truck? Mine is a daily driver with relatively short, in town runs. I don't have a very heavy foot but I do leave it idling for ten minutes or so on those cold Arizona mornings. The engine is timed correctly (a little advanced at 10 btdc) and it runs very well.
Years ago I had another 67 with a 300 6 cyl. As I recall, it got terrible mileage too. Anyhow, I'd drive this truck if it got 5 mpg but I wish I could do better than 9! Any thoughts?
jor
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
Gas Mileage
Do you run dual exhaust, that would help. 
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John
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In the cool still quiet of night, you can hear chevies rusting away.
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John
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In the cool still quiet of night, you can hear chevies rusting away.
Senior User
Joined: Feb 2000
Posts: 213
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Gas Mileage
I don't know of anything that would make a big difference. Just make sure the engine is in tune and your air filter is clean. Like John posted, the dual exhaust will help a little. I'm guessing you know not to use low first gear for normal everyday driving. Man would I like to have some of those "cold Arizona mornings" ha ha.
Mike/Ohio
Mike/Ohio
Posting Guru
Joined: Jul 2001
Posts: 1,613
Likes: 2
From: Gainesville, FL
Gas Mileage
Jor,
Put a taller tire on the vehicle. This will give you a taller gear and increase gas mileage. Simple, huh?
My Way is the Highway
KingFisher
P.S. Don't put wider tires on it!
Put a taller tire on the vehicle. This will give you a taller gear and increase gas mileage. Simple, huh?
My Way is the Highway
KingFisher
P.S. Don't put wider tires on it!
Senior User
Joined: Jun 2000
Posts: 122
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From: NE Oregon
Gas Mileage
Wider tires increase rolling resistance because of more rubber on the road. Taller tires just lower the numerical ratio of the drivetrain, making the engine spin slower rpm's for the same road speed.
Case in point: If you had a smaller car, say a 280Z or something, and put really wide tires on it, over a given race course, you would average higher times (bad) than if you used a more appropriate tire size. Too wide a tire for a given amount of power is a waste as a lot of power is used up by friction. F1 race cars use huge slicks because they run 800+ HP.
Case in point: If you had a smaller car, say a 280Z or something, and put really wide tires on it, over a given race course, you would average higher times (bad) than if you used a more appropriate tire size. Too wide a tire for a given amount of power is a waste as a lot of power is used up by friction. F1 race cars use huge slicks because they run 800+ HP.
Fleet Mechanic
Joined: Feb 2001
Posts: 1,290
Likes: 15
From: Toronto, Canada
Gas Mileage
Ok, understandable, but how much difference is this really going to make? Is going from 245 to a 285 going to make a speck of difference?
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Laughing Gas
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Tuned
Joined: Jul 2001
Posts: 408
Likes: 2
From: Northern California, USA
Gas Mileage
I seem to recall previous posts that suggested
electonic ignition would help.
Also, do headers help by less restrictive flow
of exhaust gasses? I've already done dual
exhausts; can I keep those intact when replacing
stock headers with more efficient ones?
-steve
electonic ignition would help.
Also, do headers help by less restrictive flow
of exhaust gasses? I've already done dual
exhausts; can I keep those intact when replacing
stock headers with more efficient ones?
-steve
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
Gas Mileage
>Headers and dual exhaust, John.
>jor
No Mon, just duals? Headers on a non race setup are just a waste.
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John
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[link:www.ford-trucks.net/users/jowilker/NCFTE.html|NCFTO] North Carolina Ford Truck Owners Group
In the cool still quiet of night, you can hear chevies rusting away.
>jor
No Mon, just duals? Headers on a non race setup are just a waste.
http://www.clubfte.com/users/jowilker/USFlag.gif
John
jowilker email me
[link:www.ford-trucks.com/users/jowilker|My Club FTE Page] Member since 01 01
[link:www.ford-trucks.net/users/jowilker/NCFTE.html|NCFTO] North Carolina Ford Truck Owners Group
In the cool still quiet of night, you can hear chevies rusting away.
