Fuel Milage
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Fuel Milage
Hello,
I have a 1984 F-150 w/ 351W, C6, and 3.55 rear and 235/75-15 tires. I'm getting horrible fuel milage. I've been getting around 6-7 mpg, I was wondering what suggestions anyone has.
Thanks
I have a 1984 F-150 w/ 351W, C6, and 3.55 rear and 235/75-15 tires. I'm getting horrible fuel milage. I've been getting around 6-7 mpg, I was wondering what suggestions anyone has.
Thanks
Last edited by ShannonM2; Apr 28, 2007 at 08:59 PM. Reason: Spelling
Lead Driver
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From: Houston
lol Try a lighter foot on the gas. My 351w with a 2.50 rear axle will get those kind of mpg unless im soft on the gas. Not only that but if you still have the factory cats on there replace them. They are clogged and causing restrictions by now. Havent replaced mine yet but it needs it.
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From: fargo, nd
im pretty sure pa doesnt have emissions checks, so you could strip the emissions crap off, get a new performer 4 barrel intake and edelbrock 600 cfm carb, throw some headers and dual exhaust in there, and get 12-15 mpg highway (assuming the engine is in good shape otherwise)
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So, what I'm getting for fuel milage is not considered "out of the ordinary"? Or, where would it fall compared to the "average"?
Also, last evening, I pulled one of the spak plugs to check them. It was very clean with a slightly off-white color. The plugs have been in for around 1000 miles. The engine in the truck now is a remanned' with about 20,000 miles on it. I had swapped it for the 302 that was in there.
Also, last evening, I pulled one of the spak plugs to check them. It was very clean with a slightly off-white color. The plugs have been in for around 1000 miles. The engine in the truck now is a remanned' with about 20,000 miles on it. I had swapped it for the 302 that was in there.
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From: Houston
Naw i wouldnt say your fuel economy is out of the ordinary. If its a carbed engine, your actually getting good for a carb. Their not exactly very fuel efficent.
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From: fargo, nd
if a carb is tuned right and size-appropriate it will get just as good of mileage as a fuel injection system... sometimes better. youre getting worse than my old truck that had a 460 in it- it got 8 mpg regardless, and it was a 4x4
Last edited by darrin1999; Apr 30, 2007 at 07:22 AM.
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Lead Driver
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From: Houston
Originally Posted by darrin1999
if a carb is tuned right and size-appropriate it will get just as good of mileage as a fuel injection system... sometimes better. youre getting worse than my old truck that had a 460 in it- it got 8 mpg regardless, and it was a 4x4
Posting Guru
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From: fargo, nd
my old 1980 ford fiesta got 35 mpg in town... 1.6l pushrod engine, weber carb 4 speed... would do 110, squalk tires in first 3 gears... i miss that car
Last edited by darrin1999; Apr 30, 2007 at 04:04 PM.
Lead Driver
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From: Houston
hmm well a 4cylinder computer controlled with a 1bbl carb. Dosent sound right. Are you sure your not looking at the valve body? Cause I have a 88 year model ford with a 1.9L EFI HO engine and it dosent even get but 25 - 30 mpg city and its a 5spd manual.
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From: fargo, nd
there was no computer controls on that old fiesta, that was one of my favorite parts of it... it was a progressive 2 barrel weber carb. the only electronic part on it was the electronic ignition (duraspark)
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From: Ottawa, Ontario
Originally Posted by ShannonM2
I have a 1984 F-150 w/ 351W, C6, and 3.55 rear and 235/75-15 tires. I'm getting horrible fuel milage. I've been getting around 6-7 mpg,