Upgrade differential

[wernotalone2k25]

Hey all, I currently have a 2010 F150 4.6L V8 3V 4x2 with 3.55's and I'm thinking about upgrading my differential to either a 4.10 or a 4.56 and I am going to buy a tuner for the speedometer and I'm currently running stock tires, may upgrade later down the road, no pun intended! And I'm wondering the key differences between the 2. What I'm looking for is accelerating, city driving, highway driving, towing, off-roading, mpg, and anything else I might need to know! Thanks!

[FX4Life]

Personally the 4.56 and even the 4.10 are pretty deep in my opinion. I have no experience with a 4.6 v8, but with those gears you will hurt your economy by quite a bit especially on the highway. I would suggest thinking about 3.73s. You will get more grunt for towing, acceleration, and even off road without sacrificing very much highway MPGs.

If you are set on deeper gears, I wouldn't go higher than 4.10

[Grabber70Mach]

You may find this useful:

Gear Calculator: Use Our Gear Calculator for Proper Gear Ratios (http://www.rocky-road.com/calculator.html)

[RhinoZ24]

Hey all, I currently have a 2010 F150 4.6L V8 3V 4x2 with 3.55's and I'm thinking about upgrading my differential to either a 4.10 or a 4.56 and I am going to buy a tuner for the speedometer and I'm currently running stock tires, may upgrade later down the road, no pun intended! And I'm wondering the key differences between the 2. What I'm looking for is accelerating, city driving, highway driving, towing, off-roading, mpg, and anything else I might need to know! Thanks!

If you had a 4X4 and were going to throw 35's on it I'd say 4.10 or 4.56. However with the smaller 4.6L and 4X2 3.73 will do just fine. If you're considering mpg as a factor don't even consider 4.10's or 4.56's, they're intended to put more power on the ground without care for how much fuel that takes. Ford usually put the 3.55 with the 4.6 because it's a good match for its power and towing rating. I've thought about switching to 3.73's in my '05 4.6L, but that's it. It would help with acceleration and towing, but I'd see a drop in mpg's slightly. Also the 3.55 is fine for off-roading, it's standard with the FX4 Off-road Package, but again you have a 4X2. This is just my 2 cents though. Also make sure when you choose a tuner that it has the option to reset for larger gears, I've seen many that can reset tire sizes but I've never noticed a feature for gear ratios (granted I was never looking for that option though).

[Jersey_Joe]

Tbh. If your not changing anything on your power plant. I would just stay where u r. If u insist on a lower gear. Your fuel economy will change for the worse. However. A 3.73 will make u jump as I'm guessing u want to. With that being said. Guess what happins after that? Stuff breaks lol
If u were going rock crawling and bigger tires yada yada yada. I'd go 4.56. If you put a supercharger on and were slayin silverados. I'd say 4.10. But for what u want. 3.73 will do the job far better than anything else. Good luck

5Star tuned.....

[wernotalone2k25]

Tbh. If your not changing anything on your power plant. I would just stay where u r. If u insist on a lower gear. Your fuel economy will change for the worse. However. A 3.73 will make u jump as I'm guessing u want to. With that being said. Guess what happins after that? Stuff breaks lol If u were going rock crawling and bigger tires yada yada yada. I'd go 4.56. If you put a supercharger on and were slayin silverados. I'd say 4.10. But for what u want. 3.73 will do the job far better than anything else. Good luck 5Star tuned.....

My father has the 3.73 in his 5.4L V8 and I love the acceleration, that's what I want!

[anaheim_drew]

4.10's rock

Upgrading to 4.10 gears.... - F150online Forums (http://www.f150online.com/forums/2009-2014-f-150/432034-upgrading-4-10-gears.html)



Mileage with old 3.31 gears (hwy) = 21mpg
Mileage with new 4.10 gears (hwy) = 20 mpg
- with new gears, it hardly ever needs to down shift for overpasses, unlike the 3.31 gears where it was constantly shifting.

[fird12]

3.73 with the 5.4 is amazing

[anaheim_drew]

3.73 with the 5.4 is amazing
I had 3.73 with the 5.4 and stock tires (30.5") and it was good. But when I went to 32.9" tires it was not. So I changed to 4.10 and it was then amazing.

http://www.f150nation.com/attachment.php?attachmentid=9716&d=1440888935

[fird12]

I had 3.73 with the 5.4 and stock tires (30.5") and it was good. But when I went to 32.9" tires it was not. So I changed to 4.10 and it was then amazing. my stock tires are 32's, and it's still amazing

[djfllmn]

my stock tires are 32's, and it's still amazing false. Your truck is just like my old one. It wasn't amazing.

[Jersey_Joe]

false. Your truck is just like my old one. It wasn't amazing.
That's because u forget where the gas pedal is lol

5Star tuned.....

[anaheim_drew]

my stock tires are 32's, and it's still amazing
Cool. Your truck, your opinion.

[FX4Life]

Cool. Your truck, your opinion.
Takes awhile to get to your level drew lol. Even my 6.4L feels slow to me now that I've had it a minute

[anaheim_drew]

my stock tires are 32's, and it's still amazing
But when you change tires to a 325/60/18 your effective gear ratio will change to a 3.55

[wernotalone2k25]

But when you change tires to a 325/60/18 your effective gear ratio will change to a 3.55

I wish I had 330s

Sent from my iPhone using F150 App

[anaheim_drew]

What the hell are you talking about? 330s?

[fird12]

But when you change tires to a 325/60/18 your effective gear ratio will change to a 3.55 yeah, I'm enjoying it for now though lol

[anaheim_drew]

yeah, I'm enjoying it for now though lol

You should have said, "thanks drew I did not know that tire size can change my gear ratio"

[wernotalone2k25]

What the hell are you talking about? 330s?

The width of the tire, 13 inches wide, I have 265s!

Sent from my iPhone using F150 App

[anaheim_drew]

Nope

[fird12]

You should have said, "thanks drew I did not know that tire size can change my gear ratio" no, I knew that, I'm just saying 3.73's with stock tires is pretty good

[anaheim_drew]

First you said amazing now you say pretty good?

[fird12]

First you said amazing now you say pretty good? ...grammar nazi... You know what I meant...

[anaheim_drew]

The width of the tire, 13 inches wide, I have 265s!

Sent from my iPhone using F150 App
325/60/20 is 13 inches wide and 35.6" tall

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...grammar nazi... You know what I meant...
No need to call names.

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amazing and pretty good are not the same

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newb

[fird12]

325/60/20 is 13 inches wide and 35.6" tall ---------- No need to call names. ---------- amazing and pretty good are not the same ---------- newb lol... I mean, when you correct me on little **** like that, people with a little common sense would understand.......

[anaheim_drew]

How is that little sh!t?

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4.10 gears are amazing
3.73 gears are pretty good

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Silly newb

[fird12]

How is that little sh!t? ---------- 4.10 gears are amazing 3.73 gears are pretty good ---------- Silly newb lol, newb...

[anaheim_drew]

yup

[fird12]

yup lol... Yeah, ok, you know me..

[anaheim_drew]

No I don't know you. I was just trying to help you with your 04 F150.

[fird12]

No I don't know you. I was just trying to help you with your 04 F150. and I was giving advice, not asking for it...

[anaheim_drew]

Giving advice on what? Not your 04 F150. Look at how many post you have made asking for advice.

[fird12]

Giving advice on what? Not your 04 F150. Look at how many post you have made asking for advice. not on this thread though. On this thread he's asking for advice on gearing, not my tire thread....

[anaheim_drew]

On this thread there is nothing you could help the op with. If you knew anything about our trucks, you would know that

[fird12]

On this thread there is nothing you could help the op with. If you knew anything about our trucks, you would know that he has a 3v 5.4 and was asking gearing... He then mentioned his dad's 5.4 had the 3.73 gearing, and said he liked it, I then confirmed... Then you mister go-fast is convinced that everyone needs 4.10's cuz vroom vroom... Sorry not everyone enjoys them as much as you do.

[anaheim_drew]

he has a 3v 5.4 and was asking gearing... He then mentioned his dad's 5.4 had the 3.73 gearing, and said he liked it, I then confirmed... Then you mister go-fast is convinced that everyone needs 4.10's cuz vroom vroom... Sorry not everyone enjoys them as much as you do.
wrong on so many points
1.The op has a 3v 4.6 not a 3v 5.4
2.His truck also has a 6 speed trans
3.I built my truck to tow my toys and haul my dirt bikes
4.On the 04-08 F150s 5.4 3v,4.10 gears with 30.5" tires tow the most and haul the most

[fird12]

wrong on so many points 1.The op has a 3v 4.6 not a 3v 5.4 2.His truck also has a 6 speed trans 3.I built my truck to tow my toys and haul my dirt bikes 4.On the 04-08 F150s 5.4 3v,4.10 gears with 30.5" tires tow the most and haul the most ok, I skipped over that little part, I saw his comment about his dad's 5.4, and assumed he had one as well, my bad, doesn't mean you have to keep trying to shove 4.10's down everyone's throats.and csb, I bought mine to haul my other truck, and am pretty confident it'll do great with 3.73's, even with bigger tires.

[anaheim_drew]

Sad that you are too stupid to understand this tire size change calculator


I had 3.73 with the 5.4 and stock tires (30.5") and it was good. But when I went to 32.9" tires it was not. So I changed to 4.10 and it was then amazing.

http://www.f150nation.com/attachment.php?attachmentid=9716&d=1440888935

[fird12]

Sad that you are too stupid to understand this tire size change calculator who said I didn't understand it?? God damn, it's like I'm talking to a brick wall, I understand that the effective gear ratio will change, doesn't mean I can't still tow, sure it won't be a race truck, it wasn't even a race truck to begin with, because guess what? It's a ****ing truck. Jesus Christ, get over yourself dude.

[anaheim_drew]

Who said anything about a race truck? Not me.

[fird12]

Who said anything about a race truck? Not me. it was implied, because you seem to think a lower gear ratio automatically makes it better

[RhinoZ24]

[QUOTE="fird12;114517"] who said I didn't understand it?? God damn, it's like I'm talking to a brick wall, I understand that the effective gear ratio will change, doesn't mean I can't still tow, sure it won't be a race truck, it wasn't even a race truck to begin with, because guess what? It's a ****ing truck. Jesus Christ, get over yourself dude.[/

.......

[anaheim_drew]

it was implied, because you seem to think a lower gear ratio automatically makes it better
For our trucks a lower gear ratio is better for towing

[fird12]

Don't get upset and feed the troll. It's what he wants. Best just to butt out and ignore it. I've done this one too many times on here. I'm sure I'll hear some snide comment about this comment here. But just thought you should know. Unless its on another subject that you know more than him in, he's God and you're an idiot. I gave up awhile ago on addressing truck issues with that happening. yeah, I'm probably just going to be the bigger person and stop, he obviously knows everything because he found calculator on google

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For our trucks a lower gear ratio is better for towing not always... You might be running too high of Rpms on the highway, just my .02, I'm out. Peace.

[anaheim_drew]

2005 Ford F-150 Specifications
Available axle ratios for all engines listed above: 3.31:1, 3.55:1, 3.73:1, and 4.10:1

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Lower gear ratios tow more than higher gear ratios. Look it up

[fird12]

2005 Ford F-150 Specifications Available axle ratios for all engines listed above: 3.31:1, 3.55:1, 3.73:1, and 4.10:1 ---------- Lower gear ratios tow more than higher gear ratios. Look it up yes.. But how effective is it, sure it may be great around town, but may be ****ty on the highway, or vise Versa, it depends on the application, and just because it can tow more, does not mean it is correct for the application...

[anaheim_drew]

Why not look at the towing specs before you call me names and say I'm wrong?
My truck came with 3.73s on 30.5" tires. I towed my hotrod and hauled my dirt bikes with no problems. When I changed to 32.9 tires it towed o.k but not as well as it did at first. Gears are expensive but I got a great deal and jumped on it.

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http://www.fordf150.net/photos/data/4653/New_paint.jpg (http://www.fordf150.net/photos/media/p51414-new-paint.html)

[fird12]

Why not look at the towing specs before you call me names and say I'm wrong? My truck came with 3.73s on 30.5" tires. I towed my hotrod and hauled my dirt bikes with no problems. When I changed to 32.9 tires it towed o.k but not as well as it did at first. Gears are expensive but I got a great deal and jumped on it. ---------- but it still did the job didn't it? Of coarse it's going to big down... You should've used the gear calculator to figure that out before you got the tires 😂

[anaheim_drew]

When I started modding my truck in early 2005 the selection of 22" street truck tires was very limited. 305/45/22 was what was available that allowed me to tow

http://www.f150nation.com/attachment.php?attachmentid=9636&d=1439208230

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And they were sponsored so why would I complain?

[anaheim_drew]

Upgrading to 4.10 gears

Upgrading to 4.10 gears.... - F150online Forums (http://www.f150online.com/forums/2009-2014-f-150/432034-upgrading-4-10-gears.html)


http://www.f150nation.com/attachment.php?attachmentid=10370&d=1456560598