Yeah...even though I don't have the stabilizer pkg the lighter V10 motor, FX4 and 65psi in my tires can be a bit harsh on rough roads...on the highway it smooths out nice though.

 

2008 F-250's have a Dana 60 up front and 10.5/10.25 in the rear (Both are 35spline. The F-350 has a Dana 60 up front and and a Dana 80HD axle in the rear. That should be the 37 spline axle he is talking about. Im not sure if it is offered in the SRW, but definitely the DRW.

 

The F-2/350 SRW have dana 50 front axles and a sterling 10.5,but the F-350 DRW has a dana 60 front and a dana 80 out back

 

Since 2005 the F250/350 SRW also have the Dana 60, 35 spline front axle. Interestingly, according to 4 Wheel Off Road Mag "If you opt for 4.30 axle gears you'll get a Dana 60 with a 10-inch ring gear (a traditional one is 9 3/4)."

http://www.4wheeloffroad.com/brandpa...ing_axles.html

 

That is correct.

tnsilverfx4 and tnsilverfx4 are both wrong. Unless they are talking about DRW. In that case, i could care less.

Anyway since 2002, f250s 4x4s came with a d60 front.
99-01 f250 4x4s came with a d50 solid axle.
1980-1997 f250 HD 4x4s came with TTB d50. Rear SRW axle was a 10.25 sterling (full float). LD version were rare after 1987?. They had a semi float 10.25
91.5-97 f350 4x4s came with a solid dana 60 with ball joints. Rear SRW axle was a full float 10.25 sterling
87?-91.5 f350 4x4s had a dana 60 with king pins. Rear SRW axle was a full float 10.25 sterling
99+ d50 and d60 axles are metric bolt pattern and they have unit bearings.

I don't know the first year of the 10.25. I'm guessing 83 or 80.

 

In a SRW both the 250 and 350 have a dana 60 up front and a 10.5 in the rear. id go for the 250 personally. it will do anything a 350 can.

 

The only difference between the 110 & 130 I can find has to be the amount of pinion gears in the differential. The 110 has 2 pinion gears and the 130 has 4. The 60 upfront has 2 pinion gears standard on everything. Correct me if I'm wrong.

 

yes that is true but your in 450/550 territory

 

I didn't know I could be wrong twice. The OP was asking about 2008 Super Duties.

Both 250 and 350 have a Dana 60 Front axle. In the rear, 250's have a Ford 10.50. 350's have either a Ford 10.50 or a Dana 80 (Probably for DRW).

 

The Ford 10.50-inch rear axle features the following:
• The hypoid ring gear and pinion consists of a 10.50-inch diameter ring gear and an overhung drive pinion
• The pinion is positioned by selected pinion shims and supported by 2 opposed tapered roller bearings
• Pinion bearing preload is adjusted by the pinion nut and a collapsible spacer
• The rear axle housing consists of a cast center section with 2 steel tubes
• A stamped steel rear cover on gasoline engine applications
• A cast aluminum rear cover on diesel engine applications
• Differential housing cover uses a silicone sealant as a gasket
• Differential case is a 1- or 2-piece design depending upon the application. The differential pinion shaft in the 1-piece differential case design (2 pinion) is retained with a threaded bolt. The 2-piece differential case 3-pinion spider is retained by the case halves which are bolted together
• Motorcraft SAE 75W-140 Synthetic Rear Axle Lubricant XY-75W140-QL meeting Ford specification WSL-M2C192-A
The rear axle drive pinion receives its power from the engine through the transmission and driveshaft. The drive pinion rotates the differential case through engagement with the ring gear, which is bolted to the case outer flange. Inside the 2-piece differential case, 3 differential pinion gears are mounted on a 3-post shaft. Inside the 1-piece differential case, 2 differential pinion gears are mounted on a straight shaft. These differential pinion gears are engaged with the differential side gears to which the axle shafts are
splined. Therefore, as the differential case turns, it rotates the axle shafts and rear wheels. When it is necessary for one wheel and axle shaft to rotate
faster than the other, the faster turning differential side gear causes the differential pinion gears to roll on the slower turning differential side gear to allow differential action between the 2 axle shafts.

Now with all that being said, it looks like the diesel gets gets the 3 pinion and the gasser get 2. As far as I can tell they are 35 spline. Still looking...

 

Are you sure?...maybe in the heavier trucks, but the F250/350 SRW regardless of engine have the same 10.5. I could be wrong (like everyone is once in awhile)

 

Well the book actually shows 4 different types of 10.50 differential. The basic 2 pinion, than with traction lock and the 3 pinion and it with traction lock. I can't find any official reference as to what engine gets what differential. I might be WAY off base on this next statement, the book does not list the 250 as having a full floating axle. I read that information in section 205-02C-1. Did I interpret it wrong?

 

the 250 IS full floating. i was thinking it over today at work and went and compared some 250s and 350s. All i could find was the larger block and overload springs on the 350.

 

Either way both trucks kick ****!.........

 

Front Drive Axle and Differential
The front drive axle receives input from the transfer case by way of the front driveshaft. Rotational torque is transferred through the drive pinion to the ring gear which in turn drives the differential case. Inside the differential case are the pinion gears
which rotate on the stationary pinion shaft and the side gears which are splined to the axle shafts. The differential assembly is a gear arrangement that allows the drive wheels to be driven at different speeds and divides the input torque of the pinion gear between the axle shafts. The axle shafts transmit torque only and carry no vehicle load. U-joints located near the wheel knuckle in the axle shafts, allow the axle shafts to remain stationary in relationship to the side gears, yet articulate at the knuckle. These U-joints permit the wheels to be driven and turned at the same time. Lack of lubrication is among the most common causes of U-joint concerns. It is essential that all bearing seals be purged of old grease and contaminants. Refer to Section 100-03. If only fresh grease can be seen at all the bearing cup seals when lubricated, the purging process is complete.
The Dana Model Super 60 front drive axle features the following:
• A Salisbury axle design with final drive components assembled into a one-piece housing
• A hypoid gear design with the centerline of the pinion set above the centerline of the ring gear
• Two opposed tapered roller bearings support the drive pinion in the axle housing
• A conventional differential case
• Removable differential bearing caps retain the differential assembly in the axle housing
• U-joints with zerk fittings in the axle shafts
• Full-floating axle shafts
• A cast center section with 2 steel tubes
• A stamped differential housing cover
• Silicone sealant is used as a differential cover gasket
• Axle identification is found on an embossed tag bolted to the differential cover
• A drive pinion collapsible spacer, located on the pinion shaft, maintains pinion bearing preload.
The pinion nut adjusts the preload