2011 Diesel gets Ford Sterling Rear Axle - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 46 (permalink) Old 03-14-2010, 05:47 PM Thread Starter
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2011 Diesel gets Ford Sterling Rear Axle

THe new 2011 is going to have a Ford Sterling rear axle instead of the long running Visteon. Also they are now a 3-pinion rear as opposed to the 2-pinion on the previous years...

Dana 80's for the F350/450 DRW's with a 9,000l lb ground rating. 6200lb for F250 and 7,000 lb for F350 SRW with 2 more splines than the F250 (as always 35 vs 37)

Just FYI
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post #2 of 46 (permalink) Old 03-14-2010, 07:26 PM
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This 2011 is making all the others look like toys!!

2012 F350 4x4 Lariat CC LB Black on Black!

SOLD: 2005 F250 4x4 FX4 CC SB, Road Armor (front & rear) loaded with PIAA's, Amp Research boards, 112,000 miles
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post #3 of 46 (permalink) Old 03-16-2010, 03:21 AM
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Ford's been using the Sterling axle for MANY MANY years dude!

Alex C.

R.I.P. 2006 F-250 CC SB Fx4. w/ 500 RWHP *stolen 7/15/2010*

1990 F350 CCLB 4x4 -- 24V Cummins, 200hp DDP's, SuperB over S475-sx3, Cam and valvesprings, Spe-rite Convertor, Billet input.

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post #4 of 46 (permalink) Old 03-16-2010, 04:30 PM
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Yup, last time I checked I had the 10.5 Sterling under my truck.

05 F350 CC SB Lariat, Silverline exhaust, SCT tuned by Spartan,Inaccurate QZ Commander, deleted EGR, coolant filter, blown headgaskets
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post #5 of 46 (permalink) Old 03-16-2010, 05:34 PM
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itll be interesting to hear what folks think of the 3.31 gearing

Don R.

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post #6 of 46 (permalink) Old 03-17-2010, 02:46 AM
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the gearing has got me baffled. i thought 3.55 was a stretch but 3.31 i cant even imagine. i will have to see how the other two compare with a trailer.
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post #7 of 46 (permalink) Old 03-17-2010, 03:29 AM
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the 3.31 is mentioned on (page 2 of a recent TEST at pickuptrucks.com)


Final-drive ratios remain the same as before, though they vary in availability by model. They run from a fuel-efficient 3.31:1 in a SRW F-250 or F-350 to a trailer-towing-optimized 4:30:1 in the DRW F-450. Aluminum diff covers now are used across the lineup with prominent cooling fins to control temperatures. They look cool, too.


A 6.7L with the 3.55 was tested in the same article -

We drove an F-250 Lariat Crew Cab 4x4 SRW with an 8-foot box and 3.55:1 rear axle. Towing 9,900 pounds isn't much of a challenge for this configuration, which has a max conventional trailering capacity of 14,000 pounds and maximum fifth-wheel capacity of 15,700 pounds. Not long ago we might have felt handicapped with such a tall final-drive ratio.....

Merging onto Highway 89 from a full stop was a snap. The tremendous power of the diesel combined with the six-speed 6R140 gearbox's low 3.97:1 first gear made launching truck and trailer easy and without a hint of the rear springs binding up from too much torque. It immediately built confidence in the rig as we stared at the steep climb in front of us.

As we climbed the grade, there was always plenty of torque on tap. Engine response to increased throttle was linear and progressive as the transmission smartly metered all of that power to the rear wheels. Tow/haul mode kept up our momentum even during gear changes. We nearly forgot the trailer was hanging off the back of the truck. We exceeded the speed limit going up the grade without even trying. If traffic had backed up behind us, it wouldn't have been because we had squeezed all we could from the diesel. It would have been stability concerns that prevented us from increasing our speed.


read the full details here -
http://news.pickuptrucks.com/2010/03...ty-part-1.html

Don R.

'04 350 4WD Lariat Crew Longbed (built 05.04)
-------------------

-------------------

Gear Vendors Dbl Overdrive Install w/ Pics.
135 Amp Alternator Upgrade/Replacement
50 Gal. Aux Tank; Pump, Filter, Wiring
Truck Audio,
CUSTOM Valentine One Install - LINK
$10 Grill Mod. (protects the coolers) !

Block Heater Cord (Rear Mounted w/ Timer) - LINK

REALTIME -CURRENT DIESEL Pricing <HERE>

Last edited by bushpilot; 03-17-2010 at 03:38 AM.
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post #8 of 46 (permalink) Old 03-17-2010, 03:45 AM
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Quote:
Originally Posted by midnightcaper View Post
the gearing has got me baffled. i thought 3.55 was a stretch but 3.31 i cant even imagine. i will have to see how the other two compare with a trailer.
at the end of the day the gearing is their way of trying to increase the
MPG which raises questions about how much better the mileage really is
w/ a comparable (same geared 6.0 & 6.4).

i guess regarding the 6.7L, the 3.55 is what the old 3.73 was and
the 3.31 is what the old 6.4 was w/ a 3.55.

i recall that the 3.55 and maybe even a 3.05 was offered in OBS "style" trucks,
a friend of mine had one w/ a manual tranny...said it was great on the highway,
which im sure it was...'course it would suck in town.

Don R.

'04 350 4WD Lariat Crew Longbed (built 05.04)
-------------------

-------------------

Gear Vendors Dbl Overdrive Install w/ Pics.
135 Amp Alternator Upgrade/Replacement
50 Gal. Aux Tank; Pump, Filter, Wiring
Truck Audio,
CUSTOM Valentine One Install - LINK
$10 Grill Mod. (protects the coolers) !

Block Heater Cord (Rear Mounted w/ Timer) - LINK

REALTIME -CURRENT DIESEL Pricing <HERE>
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post #9 of 46 (permalink) Old 03-17-2010, 03:54 AM
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my 03 has 3.73 but i run 37'' tires so am i actually running a 3.55 because of the tires?
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post #10 of 46 (permalink) Old 03-17-2010, 05:07 AM
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nope, actually still a 3.73 no matter what you do to it other than a gear change. your bigger tires would make it FEEL like a different gearing

Alex C.

R.I.P. 2006 F-250 CC SB Fx4. w/ 500 RWHP *stolen 7/15/2010*

1990 F350 CCLB 4x4 -- 24V Cummins, 200hp DDP's, SuperB over S475-sx3, Cam and valvesprings, Spe-rite Convertor, Billet input.

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