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Wide track(fat boy) PICKUP front axle ID and specs

32K views 35 replies 7 participants last post by  alasha  
#1 · (Edited)
PLEASE PLEASE PLEASE. IF YOU DONT KNOW WHAT YOU ARE TALKING ABOUT, PLEASE DONT COMMENT

With that said, I am looking for info on the Wide Track(FAT BOY) F350/F450axle. I am NOT interested in the 05+ F450/F550 cab-n-chassis axle
I am looking to put on in a 1995 F-Superduty to make it 4wd, keep my Factory GVW, get a better ride and get a better turning radius.

here is what I know...
-came in 08-10 F350 DRW Pickup, 11-14 F450 Pickup, 15/16 F350 DRW pickup
-RPO was either 67W or 535 depending on the year
-45* knuckles vs the 35* of the standard axle?
-8 on 200mm bolt pattern
-17" wheels
-1-9/16" tie rod diameter at the threads
-10.75" outer knuckle measurement(top to bottom outside)


But that is all the info I have. I think I found one BUT the junk yard no longer has the truck, just the axle and Vin.
is there any telling traits to tell this apart for a regular DRW axle?
Ball joint measurement?
WMS to WMS measurement?
Casting marks?
anything?

Does anyone have one of these trucks that would mine taking some measurements?
 
Discussion starter · #4 · (Edited)
Nope that is wrong. 3.73, 4.10 and 4.30 were all available on the F350. Even though 4.30 was by far and away the most common and the only ratio available in the F450 Pickup.
And the wide track axle started in 05 with the F450/F550 cab n chassis

I would love to see some 04-06 F350 wide tracks, it would open up a bigger window to find one
 
Discussion starter · #13 · (Edited)
Well I'm not as wrong as you might think since your thinking of gears first, not the whole Tow Boss package.

Ford for 2006 MY applied the "wide trac" front axle (Dana Super 60) to the Super Duty Pickup trucks. It was applied under the "TOW BOSS" package ONLY for the 6.0L F350 DRW trucks with an automatic transmission.

Yes, you might get 3.73, 4.10 or 4.30 gears using the 6.0L, 5.4L, or 6.8L motors and other transmissions. But you would not have the Dana Super 60 front axle...which is/was the "wide trac".

Hence if you found a 2006-ish DRW 6.0L Pickup with automatic transmission you MIGHT find a front axle with 4.30 gears. I want to say the rear axle for that TOW BOSS package truck would have a "finned" aluminum rear diff cover. That's also part of the "TOW BOSS" package. SO finding the 2006 DRW F350 with a rear axle having a finned rear diff cover along with a gear tag, your chances of the front axle being the DANA Super 60 "wide trac" are better than not knowing what to look for.
I do think that these years the DRW trucks were still 8x170mm spacing compared to the newer 8x200mm(SEE EDIT). SO unless you need a newer DRW rear axle as well you would need two different wheels.

I'm providing you info based on YOUR desires to not speak about the C&C trucks. You never mention what 1995 truck you are using.....that's unclear.

Considering you want this for an older truck, widening the potential sources of your front axle is helping.

EDIT: My bad...the bolt pattern was 8x200mm for these years. I guess they changed that from the leaf spring trucks.
In 2006 the F350 nor F450 pickup came with the widetrack axle, so it is a moot point. The wide track "super" 60 did not start till 2005 and ONLY came in f450/550 cab n chassis trucks. I am looking for the widetrack axle that has 17" wheels. Just because it had 4.30s doesnt mean it got the widetrack

Also I am putting the axle into my 95 F-superduty, Like I stated earlier
 
Discussion starter · #24 · (Edited)
Thank you for the knuckle size, that is helpful EDIT::::::::: with the PICKUP wide track axle, it has the same size 05+ knuckle height. Not sure about the 45 vs 35* but I'm thinking it uses the same 45* because of how much harder it turns
I already know what a widetrack front truck looks like. The fender flares are a Dead giveaway. ALL the widetracks came with front flares to cover the 7" wider axle
 
Discussion starter · #25 ·
Well, I picked up an axle this week out of a wrecked truck.

Very interesting info...
upper ball joint to upper ball joint is 59" The same as a F450/f550 axle(SRW and regular dually is 54")
NOW.. The knuckle is only 10.75" like the SRW and standard 05+ dually trucks
 
Discussion starter · #27 ·
Interesting thx
I always thought / heard the widetrac uses a larger u joint and has bigger knuckles than the non widetrac to archive the sharper turning radius

I would of though the same thing, but apparently not. Maybe the u-joints are bigger, I have not dug in that far
 
Discussion starter · #29 · (Edited)
from Colo-Duty on the Army (old thread )

this may clear some stuff up ?

Yeah, I already knew that and the 15/16 f350 tow boss also has the widetrack(fat boy)
Wish I still had my 06 F550 axles to compare the knuckles first hand

REAL QUICK measurement on the axle u-joints 5" outside measurement and 1-3/8" cap diameter
The "standard" F350 dually axle measures 4-3/4" onside measurement and 1-3/8" cap diameter


From what it looks like(no confirmation), the pickup widetrack(fatboy) axle is hybrid of a 05+ F450/F550 axle but with different inner knuckles and outers
 
Discussion starter · #31 ·
Quick update. Simplest way to ID a wide track vs non wide track.
Wide track coil bucket mounts are NOT attached to the knuckle, while a non wide track are attached. And then to tell the wide track w 17” wheels is the 8 on 200mm bolt pattern
 
Discussion starter · #34 ·
Wondering you found out
Id like to know about it. You found Wide trac axle in f350 has not bigger knuckle like f450 But may have bigger u joint.. dose this f350 wide axle have sharp steering radius like f450?
Actually i am looking for axle for tight radius
I no longer have the f450/550 axle to measure. But YES, the f350 wide track as the same sharp steering like the f450/550 cab n chassis axle