NEW MPG thread
Thread Starter
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Post Fiend
Joined: May 2006
Posts: 10,007
Likes: 4
From: Central Florida
NEW MPG thread
Like so many before me, I am looking for numbers. I have a 5.4 CC SB F250 with 4" lift, 315's and 3.73 gears. I want to compare apples to apples. I am not as concerned with wheelbase, but I am looking to find an average for 5.4 SD with 315's or 35" tall tires. The veriable I am considering is gear ratio 3.73 vs 4.10 vs any other ratio. Please chime in with:
Cab style: (regular, Extended, or Crew)
Bed lenght: (Short 6.5' or Long 8.5')
Gear Ratio: (3.73, 4.10, 4.33, ect.)
Motor Size: (5.4, 6.0, 6.8, 7.3)
Tire Size: ( inches please)
Mileage:
Other modifications:
Thanks for participating.
Cab style: (regular, Extended, or Crew)
Bed lenght: (Short 6.5' or Long 8.5')
Gear Ratio: (3.73, 4.10, 4.33, ect.)
Motor Size: (5.4, 6.0, 6.8, 7.3)
Tire Size: ( inches please)
Mileage:
Other modifications:
Thanks for participating.
Thread Starter
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Post Fiend
Joined: May 2006
Posts: 10,007
Likes: 4
From: Central Florida
I think I can hear crickets.
The result of this Poll will hopefull be a nice database that can correlate mods, tire sizes, and mileage. I need your help to gather this information, the more accurate information I get the more accurate the quiries will be. I will be sharing the DB once it is complete and as I enter data.
The result of this Poll will hopefull be a nice database that can correlate mods, tire sizes, and mileage. I need your help to gather this information, the more accurate information I get the more accurate the quiries will be. I will be sharing the DB once it is complete and as I enter data.
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 423
From: Long Island USA
It very well could be that this subject scares everyone - I know when I first saw it, I thought "uh, oh, here we go again"...
If you use the search function, you will probably come up with a lot of previous info that already exists for this exact question.
Here's one that actually has a lot of information in it.
https://www.ford-trucks.com/forums/s...hlight=5+4+mpg
If you use the search function, you will probably come up with a lot of previous info that already exists for this exact question.
Here's one that actually has a lot of information in it.
https://www.ford-trucks.com/forums/s...hlight=5+4+mpg
Thread Starter
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Post Fiend
Joined: May 2006
Posts: 10,007
Likes: 4
From: Central Florida
I have tried the search function, but alot of the information I am trying to work with is not in the post. Some will include tire height and mpg, but leave out gear ratio and mods. I really would like to have all of the information in one place, easly accessable with all of the values to make it worth while.
I do realize it seems like I am beating a dead horse with a dead horse, that was killed by a dead horse. This just seems the best way to get a base line, an average with x size tire, y size tire, gear ratio a, gear ratio b, displacement z, displacement v, CAI, Exhaust, MAF, injectors, torque converters, ect. I hope this clarifes my intent and purpose.
I do realize it seems like I am beating a dead horse with a dead horse, that was killed by a dead horse. This just seems the best way to get a base line, an average with x size tire, y size tire, gear ratio a, gear ratio b, displacement z, displacement v, CAI, Exhaust, MAF, injectors, torque converters, ect. I hope this clarifes my intent and purpose.
Tuned
Joined: Apr 2005
Posts: 396
Likes: 2
Might not help but here is a spreadsheet of my mileage of my 2005 SD 4x4 5.4L crewcab. It is running factory 245R 17's and has a 3.73 ratio axel. Best was 15mpg and worse was 10mpg.
Hootbro
http://www.gunsnet.net/album/data//500/661f250.jpg
Hootbro
http://www.gunsnet.net/album/data//500/661f250.jpg
Last edited by Beast12; May 18, 2006 at 06:10 AM. Reason: Image to link
Thread Starter
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Post Fiend
Joined: May 2006
Posts: 10,007
Likes: 4
From: Central Florida
Senior User
Joined: Jun 2005
Posts: 267
Likes: 0
From: La Mesa Ca
Cab style: ( Extended)
Bed lenght: (Short 6.5')
Gear Ratio: (3.73)
Motor Size: (5.4, )
Tire Size: ( 275/75/16= 33.5"s)
Mileage:02 f250 48,0000
Other modifications: k & n filter replacement, summit 3" muffler and side exit exhaust.
12.5-13 mpg with mixed freeway and around town
15.5 on freeway only
02 F250 XLT X-CAB SHORT BED, FAB TECH LIFT
I CRUISE AT 65 @ 1750 IN O/D WITH 3.73'S
I JUST PURCHASED 4.30'S...HOPEFULLY INSTALLING THEM WITHIN A MONTH!
Bed lenght: (Short 6.5')
Gear Ratio: (3.73)
Motor Size: (5.4, )
Tire Size: ( 275/75/16= 33.5"s)
Mileage:02 f250 48,0000
Other modifications: k & n filter replacement, summit 3" muffler and side exit exhaust.
12.5-13 mpg with mixed freeway and around town
15.5 on freeway only
02 F250 XLT X-CAB SHORT BED, FAB TECH LIFT
I CRUISE AT 65 @ 1750 IN O/D WITH 3.73'S
I JUST PURCHASED 4.30'S...HOPEFULLY INSTALLING THEM WITHIN A MONTH!
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Posting Guru
Joined: Mar 2006
Posts: 1,275
Likes: 0
From: Long Island, NY
I had an 06' F250
supercab
5.4
3.73 gear
Stock 17" 245's
5700K miles on it
never got more than 11mpg no matter how hard I tried
Traded her in
06' F250
6.0 Powerstroke
supercap
3.73
stock 17" 245's
500 miles on her
15mpg on the first tank of gas
supercab
5.4
3.73 gear
Stock 17" 245's
5700K miles on it
never got more than 11mpg no matter how hard I tried
Traded her in
06' F250
6.0 Powerstroke
supercap
3.73
stock 17" 245's
500 miles on her
15mpg on the first tank of gas
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From: North Georgia
Last edited by markn455; May 19, 2006 at 05:49 AM. Reason: Update information
Senior User
Joined: Aug 2005
Posts: 465
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2000 f250 regular cab lariat
60,500 miles
5 speed
5.4, 4.10 gears
305/70/16
I just bought it havent had a full tank through it yet, but i was wondering what everyone else runs for a rpm at 70, i am running close to 2400 rpms in overdrive. i was wondering if this is normal or what everyone else was running at. Thanks
60,500 miles
5 speed
5.4, 4.10 gears
305/70/16
I just bought it havent had a full tank through it yet, but i was wondering what everyone else runs for a rpm at 70, i am running close to 2400 rpms in overdrive. i was wondering if this is normal or what everyone else was running at. Thanks
Senior User
Joined: Jun 2005
Posts: 267
Likes: 0
From: La Mesa Ca
Originally Posted by highboy390fe
2000 f250 regular cab lariat
60,500 miles
5 speed
5.4, 4.10 gears
305/70/16
I just bought it havent had a full tank through it yet, but i was wondering what everyone else runs for a rpm at 70, i am running close to 2400 rpms in overdrive. i was wondering if this is normal or what everyone else was running at. Thanks
60,500 miles
5 speed
5.4, 4.10 gears
305/70/16
I just bought it havent had a full tank through it yet, but i was wondering what everyone else runs for a rpm at 70, i am running close to 2400 rpms in overdrive. i was wondering if this is normal or what everyone else was running at. Thanks
so 70mph with 3.73's is 1900 rpms with 33.4" tires
check out this link to an rpm calculator w<!-- -->ww.classic<!-- -->truckshop.com/garage/shopmathrpm1.asp
Last edited by bigblack02; May 19, 2006 at 02:57 PM.