Line one reads; V126C
Line two reads: 3.55 10 2 8H17

I am being told it is a dually rear end from a late 80's F350. Just want to make sure before I go 300 miles to buy it.

Thanks Happy Holidays
DB916gt

 

It's a 3.55 gear ratio, not sure that ford ever used that ratio in a dually rear. I know it was an option though.

 

Welcome to FTE

V126C = Sterling 10.25 / 3.55-1 / Ford WDD non Limited Slip / Rear Axle Parts List # 258.

The 1980/89 Ford Light Truck Parts Catalog sez this particular rear axle was used 1987/89 on F250 & F350's.

8H17: Assembled August (H) 17, 1988 (8).

The rear axle application chart in this parts catalog doesn't specify SRW or DRW for V126C.

 

Thank you for the information.. Let my driving begin...

 

So this axle should bolt right up into my 91 F250 4wd SC Long bed, Yes?? did 87/88 have ABS, and if not, can it all move over. One more question, can I move the ring and pinon which are 4:10 into this 87/88 axle?

Thanks
DB916GT

 

Still looking for an answer on this question please, if there is anyone on today that can confirm or deny, I would be grateful

DB916gt

 

bolt in?? it will, but if it is a 350 dually rear from a cab chassis truck, it will be narrower than the pickup rear.
the 4.10 gear is the cut off point, so it will bolt to the 3.55 carrier.

 

TJC: Thanks for the information, the axle is coming out of an 88 Crew Cab F350 Pick Up w/ a 5sp and 2wd Diesel. It has 3.55 gears. I will be recieving the axle, wheels, and springs (Including an air bag system) to bolt into my 91 F250 SRW P/U after I exchange out the Carrier / Ring and Pinion. I have the bed already, it is being prepped to paint, and the last thing to do is figure out the Front Axle. For now, I think I will install the Spacers to gain the offsett for the dually Rims. Later down the road, a D60 Dually front end. However, I am just curious, does the spacer from the Ford parts line fit over the hub of the 250 and bolt on to the existing wheel studs? Or am I going to have to buy an aftermarket kit, like from Arrow Craft?

One other question if you have the time. The parts donor truck has a 2 speed under / over drive unit presently installed. Have you ever messed with a unit like this. I though it might be a unique option to install into my truck. Since I am running 4.10 gears with the E40D. When loaded, I could use the over drive on the 2sp, and leave the overdrive off on the E40d, thus gaining a different power band for the hill climbs, and when on the road, use the overdrive of the 2spd, and still keep the overdrive off on the E40d but have lower RPM's on the flats. Then when unloaded, I could have mutliple options for gearing as I cruise around. Have you heard of anyone doing that?



Thanks again,
DB916gt

 

126C = 3.55:1 Conventional Differential, Single rear wheel
full floating axles, integral carrier

163C = 3.55:1 Convential Diff, Dual rear wheels
166C = 3.55:1 Convential Diff, Dual rear wheels
169C = 4.10:1 Limited slip Diff, Dual rear wheels
171C = 4.10:1 Limited slip Diff, Dual rear wheels

 

yes, you can use the bolt on OD unit for double overdrive.
just make sure you get all the wiring for it.

if this new rear is a single rear wheel unit, it will be the same thing you already have in your truck.
even if it is a dually rear, it may still be the same thing that you have now. check the stud length on both rears. my 88 came with the long studs, and i can bolt dual wheels on it without doing anything.
you may be able to save yourself the cost of the rear and money to set it up id it is the same thing as you already have.

as far as the front adapters go, they bolt rite on to the Dana 60 wheel studs. there is no real difference in the Dana 60 dually and single wheel fronts except for the adapter.
you CAN bolt the adapter to your current Dana 50 ifs, but i don't trust the ifs front axle assemblies.

 

Thanks, you solved the mystery on one of my questions on another thread. I am on my way down to look at a different axle already installed in an 88 DRW F350, 2WD Diesel that the owner is parting out. My guess is that it is a 3:55, probably a 163c or 166c. Will let you know later. I would hope that iti is a 169c or 171c. but will see.

Guess my next question would be the offsett wheels for the Duallys, 88-95, are they all the same. 8.5 x 6 16" wheels? and is thd offsett all the same?

Thanks again
DB916GT.

 

Hello all, my dilema continues, I have looked at an easy dozen axles from Fords ranging from 87-95. All DRW's and all of them have different dimensions. It is unbelievable. My current SRW F250 SC 4x4 spring perches center bolt to center bolt is 45". Axle flange to Axle Flange is 54".

I have not found an axle that meets the Spring Perch dimension that I have? and yet to understand what width will I need to satisfy the offset of the inside wheel. I have run into axles measuring as little at 52" to a width of 62" on flange to flange. I am assuming that the variablity is application driven. Example: Chassis Cab, Amulance, Super Cab vs Crew Cab vs. Single Cab, which all must have some pre-ordained frame width which ultimately changes Spring Mount Perch Position on the Axle. Then I am sure total width is then predicated on offsett and spring placement.

So all you braniacs out there, what do I exactly need for my DRW conversion for an axle? I have the bed, I have the wheels and tires, all I need is the axle, and I can get on with my project. I really would prefer a direct bolt in, but if I have to move the spring perches on the axle, so be it. Then what is most important to me at that point would be how wide an axle to I need. Frame width is 42" outside to outside.

Thanks to all that have contributed, I hope my quest can end soon.

Regards.
DB916gt
91, F250 SC 4x4 460 SRW E4OD, 4:10's

 

why dont you just bolt the wheels to the rear axle you already have in the truck??

 

Find an axle that will fit outside the frame rails with clearance and look right in the DRW fenders. You can always relocate the perches to match your spring mounting width. I don't think you're going to have any luck finding one that will bolt in.

Jason

 

Not sure the studs are long enough, nor is there enough clearance for the Air Bag system that is currently installed on the F250.

Oh the fun
DB916GT