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Drivetrain Tech General discussion of drivetrain for the Ford Ranger.

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  #26  
Old 10-15-2008
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ok so running 373 will increase fuel milage, what about tearing it up in overdrive on the highway doin 70+ mph compared to 410
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  #27  
Old 10-15-2008
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there is not much difference in 4.10s and 3.73s or least not that i noticed. Redneckstone ran 3.73s and 32s on a 2.3 and was fine, so i see no reason why you would not be fine.
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  #28  
Old 10-15-2008
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4.56's and 33's and i love it i got a 3.L auto but man youd love ityoull have crazy torque and my top end speed is about 95
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  #29  
Old 10-15-2008
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well mts arent anygood at fast speeds so i dont go over 75, so mayb a 410 swap is in the future
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  #30  
Old 10-15-2008
04 EDGE
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Quote:
Originally Posted by timpat92855 View Post
there is not much difference in 4.10s and 3.73s or least not that i noticed. Redneckstone ran 3.73s and 32s on a 2.3 and was fine, so i see no reason why you would not be fine.
please explane the not difference in 3.73 and 4.10.

theres a huge difference.

he just didnt want to accept the fact that his truck needed a gear change, or wanted to pay someone to do it.
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  #31  
Old 10-16-2008
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I noticed a 300 rpm increase from 3.73s and 4.10s. First gear was the only gear i could tell had gained anything but i am a 4 banger with 31s, 4.10s are still to high, i cruise at 2100rpm at 55.
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  #32  
Old 10-16-2008
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Icon6 More gear...

I went from the stock 3.73's to 4.10's while still running 31's last year and could definitely feel the difference. However, shortly after changing the gears, I moved up to 33" x 11" ProComp Extreme M/T's and now wish that I had gone to 4.56's. It's not cheap to do both diff's (in my case anyway) so do it right the first time! I would go 4.56's - you'll still get decent mileage but have enough gear to make the truck scoot! Even with an Eaton M90 on top of my 4.0, I can't spin these big muds on asphalt... it digs pretty good offroad but not on the street. Just another opinion but from a "Been there - Done that" Ranger owner!
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  #33  
Old 10-16-2008
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ok one more question...i have a 7.5 rearend and my trucks 2wd so i would only have to change one set, but would 4.56 gears fit in the carrier that i already have??? i once read a guy posting that he had to change the differential encasement to fit the new gears and was wondering if this would really be an issue
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  #34  
Old 10-16-2008
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Icon6 Gears

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Originally Posted by billabong98z View Post
ok one more question...i have a 7.5 rearend and my trucks 2wd so i would only have to change one set, but would 4.56 gears fit in the carrier that i already have??? i once read a guy posting that he had to change the differential encasement to fit the new gears and was wondering if this would really be an issue
Ford offered up to 4.10's in the 7.5 but this page on TRS...

http://www.trsfabandoffroad.com/products/gears.htm (scroll down to Ford 7.5")

...shows four different manufacturers for the Ford 7.5" diff ranging from 3.73's to 5.13's. I'm not familiar with Yukon but the other three have been around for years. Pick one and do a search elsewhere for price comparisons. If they're made for the 7.5 I would think they'd fit without any changes. Watch and see if anyone else pipes in with an answer.
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  #35  
Old 10-16-2008
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Originally Posted by 04 EDGE View Post
please explane the not difference in 3.73 and 4.10.

theres a huge difference.

he just didnt want to accept the fact that his truck needed a gear change, or wanted to pay someone to do it.
For the cost of changing gears going from 3.73 to 4.10 isnt worth it. And there really isnt a huge change with them. Your only stepping up 10% in gearing, which for the cost to change gears is a waste.
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  #36  
Old 10-16-2008
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Im with redranger...i should of got 4.30s.
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  #37  
Old 10-16-2008
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4.56's
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  #38  
Old 10-16-2008
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Originally Posted by redranger4.0 View Post
For the cost of changing gears going from 3.73 to 4.10 isnt worth it. And there really isnt a huge change with them. Your only stepping up 10% in gearing, which for the cost to change gears is a waste.
why would ford put 4.10's in trucks with 3.0's and 3.73's in trucks with 2.3's?

if the truck came with 3.73 and you go up 2 inches in tire size then you need to re-gear to at least 4.10. or should i say "should"

i ran 4.10's on 32's for a while, it sucked, the automatic was always hunting for overdrive. stock tire size was 235-75-15 (29" tire) stock gear was 4.10.

i changed to 4.56's last spring and also changed to 33's, at this point it is still not as good as stock, but its doable.

there is a noticeable difference, you may not notice, but your PCM will!
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  #39  
Old 10-16-2008
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Originally Posted by 04 EDGE View Post
why would ford put 4.10's in trucks with 3.0's and 3.73's in trucks with 2.3's?

if the truck came with 3.73 and you go up 2 inches in tire size then you need to re-gear to at least 4.10. or should i say "should"

i ran 4.10's on 32's for a while, it sucked, the automatic was always hunting for overdrive. stock tire size was 235-75-15 (29" tire) stock gear was 4.10.

i changed to 4.56's last spring and also changed to 33's, at this point it is still not as good as stock, but its doable.

there is a noticeable difference, you may not notice, but your PCM will!
my 2.3 had 4.10s

while my 2.5 had 3.73s

and my 4.0 has 4.10s
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  #40  
Old 10-16-2008
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i have a 4.0L Auto on 33"s and running 4.56gears, can still pull 20mpg on the highway.
dont let people tell ya you will get crappy gas mileage with 4.56gears if they dont have them ha. the low end power is awesome! and still enough grunt to pass people on the highway. at freeway speeds im only 300rpm higher than i was factory with 3.55gears
go 4.56
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  #41  
Old 10-16-2008
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Originally Posted by Urandaman View Post
i have a 4.0L Auto on 33"s and running 4.56gears, can still pull 20mpg on the highway.
dont let people tell ya you will get crappy gas mileage with 4.56gears if they dont have them ha. the low end power is awesome! and still enough grunt to pass people on the highway. at freeway speeds im only 300rpm higher than i was factory with 3.55gears
go 4.56
Your truck didn't come factory with 3.55 gears
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  #42  
Old 10-16-2008
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4.56's definitaly what he needs..
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  #43  
Old 10-17-2008
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Originally Posted by 04 EDGE View Post
why would ford put 4.10's in trucks with 3.0's and 3.73's in trucks with 2.3's?

if the truck came with 3.73 and you go up 2 inches in tire size then you need to re-gear to at least 4.10. or should i say "should"

i ran 4.10's on 32's for a while, it sucked, the automatic was always hunting for overdrive. stock tire size was 235-75-15 (29" tire) stock gear was 4.10.

i changed to 4.56's last spring and also changed to 33's, at this point it is still not as good as stock, but its doable.

there is a noticeable difference, you may not notice, but your PCM will!
You make no sense, you went from saying 4.10's would make a huge difference to saying 4.56 is what you need. So I guess your agreeing with me.
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  #44  
Old 10-17-2008
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Originally Posted by 04blackedge View Post
Your truck didn't come factory with 3.55 gears
i guess i should sue Ford then for false advertising? vin tag is wrong, window sticker when i bought it is wrong too... the gears i took out of the rear end must be wrong too... thanks for letting me know... im gonna be rich now
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  #45  
Old 10-17-2008
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Originally Posted by Urandaman View Post
i have a 4.0L Auto on 33"s and running 4.56gears, can still pull 20mpg on the highway.
dont let people tell ya you will get crappy gas mileage with 4.56gears if they dont have them ha. the low end power is awesome! and still enough grunt to pass people on the highway. at freeway speeds im only 300rpm higher than i was factory with 3.55gears
go 4.56
I get 15-16 with 5.13s, and your right.

Quote:
Originally Posted by 04blackedge View Post
Your truck didn't come factory with 3.55 gears
He has the 4.0L it came with 3.55s there are a bunch of 4.0s like that.

Quote:
Originally Posted by Urandaman View Post
i guess i should sue Ford then for false advertising? vin tag is wrong, window sticker when i bought it is wrong too... the gears i took out of the rear end must be wrong too... thanks for letting me know... im gonna be rich now
lol not really, because your right.
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  #46  
Old 10-18-2008
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So 04edge says 4.56 with 33's and still NOT at stock power...So 4.88 is ideal for 33's??
Im going with 4.56 sometime
I have 3.73 and 32's and my trans can find overdrive just fine

Last edited by ranger_1999; 10-18-2008 at 04:07 PM.
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  #47  
Old 10-18-2008
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Originally Posted by ranger_1999 View Post
So 04edge says 4.56 with 33's and still at stock power...So 4.88 is ideal for 33's??
Im going with 4.56 sometime
I have 3.73 and 32's and my trans can find overdrive just fine
I said 4.56's too but when/if I change, I'll be going with 4.88's... I'm not worried about highway and if I ever go up to 35's I'll still be good that way! Here's a nice chart from TRS!

http://www.therangerstation.com/tech...tirechart.html
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  #48  
Old 10-18-2008
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Originally Posted by Urandaman View Post
i guess i should sue Ford then for false advertising? vin tag is wrong, window sticker when i bought it is wrong too... the gears i took out of the rear end must be wrong too... thanks for letting me know... im gonna be rich now
trent my truck came with 3.55s too.. that SUCKED!!

sucked even worth drivin around for a week on 33s with 3.55s.. HAHA
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  #49  
Old 10-18-2008
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Originally Posted by black-n-blue View Post
sucked even worth drivin around for a week on 33s with 3.55s.. HAHA
haha i drove my truck from cali back to texas after i got the suspension put on with 33s and 3.55s and a bed full of stock parts and tires haha talk about NO power on the highway at all
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  #50  
Old 10-19-2008
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I got factory 4.10s and 33s and it lacks low end...if I was goin to regear I would go 4.88s.
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