which rear end?
Cargo Master
Joined: Nov 2004
Posts: 2,751
Likes: 3
From: So Oregon
One reason you don't see a lot of people telling you the difference in mileage is most of us have had only one ratio, so it's hard to compare. I get about 11mpg, sometimes more, sometimes less. I have the 4.30.
I have a 2005 Crew Cab, short box, 4x4.
I have a 2005 Crew Cab, short box, 4x4.
Laughing Gas
Joined: Jan 2004
Posts: 1,142
Likes: 2
From: Denver, CO
Originally Posted by Ace!
One reason you don't see a lot of people telling you the difference in mileage is most of us have had only one ratio, so it's hard to compare. I get about 11mpg, sometimes more, sometimes less. I have the 4.30.
I have a 2005 Crew Cab, short box, 4x4.
I have a 2005 Crew Cab, short box, 4x4.
Senior User
Joined: Oct 2004
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The 3.73 rear IS NOT available on this truck. The KR package comes std with 4.10LS anyway..I wouldn't worry about getting the optional 4.30's...you wont need it.
Last edited by fomocofan; Mar 17, 2007 at 04:00 PM.
Cargo Master
Joined: Nov 2004
Posts: 2,751
Likes: 3
From: So Oregon
If you're getting a 4x4 it's something like $300 more for the 4.30 IIRC. You'll never be able to regear one axle, let alone both for $300. Also, it used to be the 4.30 ratio came with a Super60 front axle, or so it would seem based on the builders guide. This was the case in 2005.
Senior User
Joined: Oct 2004
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Originally Posted by Ace!
If you're getting a 4x4 it's something like $300 more for the 4.30 IIRC. You'll never be able to regear one axle, let alone both for $300. Also, it used to be the 4.30 ratio came with a Super60 front axle, or so it would seem based on the builders guide. This was the case in 2005.
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Senior User
Joined: Jan 2007
Posts: 168
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i think i am going with the 4.1
i will still be able to pull the house and barn down, just one at a time vs both at the same time with the 4.3
thx to all for their opinions - dealer not much help - they sell almost all psd
i will still be able to pull the house and barn down, just one at a time vs both at the same time with the 4.3
thx to all for their opinions - dealer not much help - they sell almost all psd
Cargo Master
Joined: Nov 2004
Posts: 2,751
Likes: 3
From: So Oregon
Fomocofan,
My first thought was in regard to hunting. For me, my hunting rig needs the 4.3 (but then again, my hunting spots aren't in flat areas so I want more crawl ratio), second was the fact he'd tow 11 or 12k lbs up to twice a month. I don't *know* that 4.3 will get worse mileage, but it may. Sounds like the 4.1 will do just fine though, just a difference of opinion I guess.
My truck got better mileage over 70mph than under, so 4.30 *may* get better mileage.
My first thought was in regard to hunting. For me, my hunting rig needs the 4.3 (but then again, my hunting spots aren't in flat areas so I want more crawl ratio), second was the fact he'd tow 11 or 12k lbs up to twice a month. I don't *know* that 4.3 will get worse mileage, but it may. Sounds like the 4.1 will do just fine though, just a difference of opinion I guess.
My truck got better mileage over 70mph than under, so 4.30 *may* get better mileage.
Last edited by Ace!; Mar 17, 2007 at 11:09 PM.
Junior User
Joined: May 2006
Posts: 84
Likes: 0
From: Santee Ca
Ace, I'd love to drive over 70 and get better mileage! Curiously, my manual does not even list a 4:10 gear for the 6.8L engine, only the 5.4L. If there's not really any noticable gas mileage difference the only true cost is the 4:30 gear swap itself. To save money I'd like to buy the gears myself and have a reputable shop install them. Are there other items that should be included or considered in this venture?
2003 F250 V10, 6.8, Long bed crew cab, 4x4, 3:73
2003 F250 V10, 6.8, Long bed crew cab, 4x4, 3:73
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Laughing Gas
Joined: Jan 2004
Posts: 1,142
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From: Denver, CO
Originally Posted by fomocofan
There is a difference in mileage from 4.10 to 4.30. your rpm's will be higher at the same speed with the 4.30's and of course more rpm's mean more fuel!!
Senior User
Joined: Oct 2004
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Originally Posted by MadMedic20
Look through all the MPG polls and threads, there isnt a difference. Just like there isnt a differnece bwtween the V8 and V10.
If you had two identical trucks with the only thing different being the gears, one would get better mileage..it is pure math!
i have owned about every combination of Ford trucks as there are and I know there is a wide difference in them.
i have seen these MPG polls..and I see anywhere from 4 mpg to 16 mpg...how can you say they are all the same??
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Senior User
Joined: Jan 2007
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if this truck follows the physics of other vehicles (which i am sure it does) a 4.1 will use less gas at 70mph (non towing). how much we probably will never know. it may be .1mpg or 2mpg. i bet it is somewhere in between. probably under 1 but when you only get 12-14 on the highway 1 mpg is a pretty high percentage.
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Originally Posted by theoshin
if this truck follows the physics of other vehicles (which i am sure it does) a 4.1 will use less gas at 70mph (non towing). how much we probably will never know. it may be .1mpg or 2mpg. i bet it is somewhere in between. probably under 1 but when you only get 12-14 on the highway 1 mpg is a pretty high percentage.
there are too many variables to listen to these boards for "accurate" comparisons...
Cargo Master
Joined: Nov 2004
Posts: 2,751
Likes: 3
From: So Oregon
Originally Posted by fomocofan
...and of course more rpm's mean more fuel!!