Gears = mpg???
I'm running a 99 Drw and getting about 14.5 mpgs with 355 gears. I have two buddies that have the same truck running 410's and they get 20 mpgs. I find it hard to believe. Yeah it takes more to get mine going but is it really that big of a difference? Should I swap to 373's.? What is the best setup for this truck?
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MPG also has a lot to do with driving habits, gear ratios, tire size, transmission and many other things. I had a 01 6spd speed with 3.55's and my buddy had an 01 Auto with 4.10's. Bone stock he usually got 1-2 mpg better than I did. But I am also 32 yrs old and he is 57 yrs old. Our driving habits are totally different.
Now if you do much towing you will like 4.10's or a higher gear ratio. |
What size tires is on the truck? 3.55 gears you should get better then the 4.10s. Bigger tires will change the MPGs. You have the smarty is the tire size correct?
My driving habits=:popo: |
Gears = mpg???
If you are doing a lot of in town driving don't look for much more. I was avg around 16-17 in town with my 3.55s however when you get them out on long runs that's where the high gearing helps. I could see any where up to 21mpg just depending on driving habits when I went on long trips
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Tire size = 235. yeah I adjusted the speedo with the smarty. It is just weird. I don't drive with a lead foot.
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Environment Would be My Guess
Are you talking straight highway long-distance, mixed, start-stop around town? Being more mixed mode leaning to start/stop would explain it. Taller gears only translate to better mpg on the highway, all else being equal. Higher gears means worse fuel mileage in urban environments with a lot of start-stop driving.
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it also depends on if they are trusting the overhead or hand calculated. I will take my 3.55's any day over 4.10's
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Gears = mpg???
Originally Posted by 01quadcab
(Post 747921)
it also depends on if they are trusting the overhead or hand calculated. I will take my 3.55's any day over 4.10's
Also it is possible for a truck with 4.10s to get 20plus my old roommate had a 01 3500 that got around 20 mpgs hand calu. on a regular basis |
If I had 4.10's I would want a pretty tall overdrive ratio, maybe even a gear vendors.
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I do about 60% city and 40% highway
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