2009 Ranger R8 Axle Door Code Clarification

[JordK]

Hello, new to the forums here, signed up to maybe provide some info on something.

From the research I have done, an R8 axle code on the door sticker indicates a gear ratio of 4.56. However, there are a few places that state the R8 simply means its a 4.10 with a Torsen LSD.

Many people I have seen have also said that R8 axles simply don't exist, either due to the 4.56 gears not coming from the factory or not at all.

So here is a picture to prove they at least exist: https://www.dropbox.com/s/jhvohs1o86ws7cr/IMAG0368.jpg


From a 2009 Ranger FX4 Off Road from Canada. I have not taken off the differential plate to see if it truly has the Torsen, but it absolutely is a 31 spline and 4.10 gears. Hopefully this helps some people with information.

 

[black_demon69]

http://www.therangerstation.com/Magazine/Summer2009/federal_sticker.htm

look here

 

[JordK]

http://www.therangerstation.com/Magazine/Summer2009/federal_sticker.htm

look here

Exactly my point, it says R8 is a

L/S 8.8"

4.56

Which this is absolutely not. Its an R8, but it has 4.10 gears, not 4.56. I think there is where the confusion stems from. People say the 4.56s don't exist (stock from dealer), and in conjunction, the R8 doesn't. At least one certainly does.

 

[adsm08]

My book says R8 is a 4.10 8.8, limited slip, 3600 GVW.

 

[JordK]

My book says R8 is a 4.10 8.8, limited slip, 3600 GVW.

Yes, I have seen much fewer places that distinguish it as such on forums. Most the "charts" say 4.56. I think it might be true that R8 is, at least usually, a 4.10, not the mythical 4.56 which I don't think anyone has ever seen before on a stock truck.

Thanks for the input! Hoping this will clarify some information about the Ranger.

What book are you using?

 

[Sasquatch_Ryda]

Ford shop manuals I would be guessing, same as myself as we are Ford techs.

Here is what is listed for the 09 ranger

The following lists the gear ratios on axles.

• 86 — 3.73 non-limited slip (7.5 inch)
• 87 — 4.10 non-limited slip (7.5 inch)
• 95 — 3.55 non-limited slip (8.8 inch)
• 96 — 3.73 non-limited slip (8.8 inch)
• 97 — 4.10 non-limited slip (8.8 inch)
• R5 — 3.55 limited slip (8.8 inch)
• R6 — 3.73 limited slip (8.8 inch)
• R7 — 4.10 limited slip (8.8 inch) — 2,750 lb GVW
• R8— 4.10 limited slip (8.8 inch) — 3,600 lb GVW

 

[JordK]

Ford shop manuals I would be guessing, same as myself as we are Ford techs.

I wonder where the thought of the 4.56 gears came from. Unless it is something specially Canadian or something extremely rare... (Edit: Didn't notice you were from BC).

I guess till someone else comes along with proof otherwise, the R8 certainly is a 4.10, not a 4.56, at this point. Hopefully the people who made the charts can find this thread eventually.

 

[Sasquatch_Ryda]

Its not a Canadian thing, I just posted the table out of the 09 shop manual.

 

[JordK]

Its not a Canadian thing, I just posted the table out of the 09 shop manual.

Made an edit there, didn't notice you were from BC.

 

[Sasquatch_Ryda]

Also the R8 axle code is only listed for 08/09 model years.

 

[JordK]

This is an 09' Ranger, so that works at least. I think maybe it has more to do with the diff having a Torsen LSD than anything to do with the gear ratio?

 

[Sasquatch_Ryda]

Torsen and 31 spline shafts/larger axle bearings (hence the higher GVW)

 

[JordK]

Torsen and 31 spline shafts/larger axle bearings (hence the higher GVW)

Alright, wonderful. Thank you for your help! This confirms most things here.

 

[RDNX]

Exactly my point, it says R8 is a

L/S 8.8"

4.56

Which this is absolutely not. Its an R8, but it has 4.10 gears, not 4.56. I think there is where the confusion stems from. People say the 4.56s don't exist (stock from dealer), and in conjunction, the R8 doesn't. At least one certainly does.

EXPLAIN THIS:

Reman Complete Axle Assembly for Ford 8.8" 98-08 Ford Ranger 4.56 Ratio, 10" Drum Brakes, Posi LSD - Zumbrota Drivetrain - Jim's Drive Train

Any company can say they offer rear differentials. The difference is that we truly understand what it takes to provide a quality remanufactured rear differential assembly. For nearly 30 years rear differentials have been an integral part of our business. We don't cut corners, and we don't market...

jimsdrivetrain.com

 

[Dirtman]

EXPLAIN THIS:

Reman Complete Axle Assembly for Ford 8.8" 98-08 Ford Ranger 4.56 Ratio, 10" Drum Brakes, Posi LSD - Zumbrota Drivetrain - Jim's Drive Train

Any company can say they offer rear differentials. The difference is that we truly understand what it takes to provide a quality remanufactured rear differential assembly. For nearly 30 years rear differentials have been an integral part of our business. We don't cut corners, and we don't market...

jimsdrivetrain.com

It's an axle.