Mpg loss with lift?? - Ford Powerstroke Diesel Forum
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post #1 of 8 Old 05-20-2013, 04:51 PM Thread Starter
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Mpg loss with lift??

I have a 07 350 DRW that I'm putting a 6" lift on with 35x12.5x17r.... How much will my mpg drop with going up 6"??? Currently all stock motor wise with straight pipe and a leveling kit with 245 tires on it.. Getting around 15 mpg now.. 4:10 gears I believe.. What are you guys seing mpg wise with a 6" lift??..
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post #2 of 8 Old 05-21-2013, 01:56 PM
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You are probably going to get quite a few responses in regards to negative mileage. First of all a 1 ton dually is not known for great mileage. Put a 6 inch lift on it and it can only go down. I have a 01 F250 7.3 i have had for 10 yrs and i put an 8 inch lift and 38s on it after one week of owning it. I get about 15 mpg as is. I did not buy it for mileage, i bought it because that is what i wanted. I DD it for the most part, i also have an 08 Infiniti G35 i drive once in a while. I really could care less what i get for mileage as it is what i want and it makes me happy when i drive it lol. Do i use it like a truck should be used....NOPE, but it has been paid off for about 7 yrs and it really does not cost me much to have, and i will probably never get rid of it, so who cares.
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post #3 of 8 Old 05-21-2013, 02:59 PM
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lift is about the same its the tires that kill mpg's.. i used to get 17-18mpg and its dropped to 15-16 when i put mud tires on it..

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post #4 of 8 Old 05-21-2013, 03:27 PM
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I would figure you will loose around 1-3 MPG's

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post #5 of 8 Old 05-21-2013, 05:32 PM
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Lifting a truck causes a loss because of the upward draft causing more drag among other things. If you kept the lift to a minimum like a leveling kit and 4in rear blocks, it would have minimal effect. Having a dually with 410s and 35s will also have minimal effect as the tires cause the truck to be geared similar to the srw 373 trucks.

I will not have any hard numbers for you but im putting 315s on my 03 dually this weekend with 4in lift. Im hoping my mileage will remain the same but help rpms on hwy along with making the truck look better

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post #6 of 8 Old 05-22-2013, 07:22 AM
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I don't think you will see much of a change due to the gearing and tire size.

2001 - 14" OUO 525 - 38x15.5x20 Toyo & 20x12 Weld Cheyenne's. Hybrids, 38R, BTS, Spearco, Terminators..



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You will get some axle wrap with a heavy trailer, I can feel it when towing my gooseneck with some heavy equipment. My Deavers will wrap enough to make the tires rub the front of the rear fender well if I give it too much throttle on aceleration.
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post #7 of 8 Old 05-22-2013, 08:06 PM
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Quote:
Originally Posted by layson View Post
I don't think you will see much of a change due to the gearing and tire size.
This is a simpler way to say what I was trying to point out

03 F350 7.3L Auto CC LB Dually 410's (LS Rear)315's

PHP/Beans tuned, 250/100 FF inj's, BTS Tranny, Strictly Diesel complete fuel system w/RR & FB Delete, Pius LASB from Irate, Swamps hvhf IDM
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post #8 of 8 Old 05-23-2013, 08:01 PM Thread Starter
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Thanks guys!!!!
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