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There was a post real early in the thread showing the differences in the knuckles big vs bigger, and caliper bolt spacing was one of them.
the 1550s fit either knuckle
Probably only got a normal 05+ axle

Look on the napa website, they always used to list important info like the bolt spacing on caliper brackets.
Rock auto may list detailed data it that helps?
fwiw in 2013 the 250 and 350 went from 13.5ish to 14.5ish rotors

2008-2012 450 factory pickups had smaller brakes than 450/550 cab and chassis did
My axle is this...actual pic


I don't know the exact year and if there were number on the housing they are long gone because I cut it down for a rear steer axle...



I bought 04-f450 rotors and f550 calipers as per this article
Dana Super 60 High Pinion Front Axle - 4-Wheel & Off-Road Magazine

2004 f450 rotors fit no issues(14.5 OD rotors) mounting bracket spacing is a lot wider than the actual 8.5" on the knuckles

After some research(mostly looking at different year pics on oreillys website) the 05-09 calipers have the big 10.75" mount spacing. Now the 10-12 "appears" to be a lot closer spacing and the 13-up Looks the same way but calipers look like a different shape

Im gonna stop by the parts store and have them pull both the 10-up and 13-up calipers to measure....

Where is Billavista to write an indepth article on these???..... this thread is too deep with few facts that aren't 25 pages apart..... :confused:
 

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There was a post real early in the thread showing the differences in the knuckles big vs bigger, and caliper bolt spacing was one of them.
the 1550s fit either knuckle
Probably only got a normal 05+ axle

Look on the napa website, they always used to list important info like the bolt spacing on caliper brackets.
Rock auto may list detailed data it that helps?
Thanks for the links.... after a trip or two to the oreillys with a tape measure I found calipers that bolt on ...2011 f450(8 lug) and I had to swap the 14.5” rotors for the 8 lug f350/450 13.6” rotors.

Maybe my axle is an odd ball since it was bought directly from ford as an new assembly, rotors , UBs and calipers were removed and the part I got was given away. Strange thing it has the big 1550 ujoints and axles. I took never before run 4.30 10” gears out of it.

And the other strange thing is the axle tubes are no where close to 1/2” thick...not even 3/8ths.....
 

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I've taken my LS powered 4d" full hyd. Steering, locked LJ multiple times to moab.... Wheeled Pritchett multiple times + area bfe, all of 21 road, Rausch creek, morning wood in Ontario and the like. I've wheeled hard... But smart, for over 2 years on the same stock lockouts that were used when I got them. I've never had one fail. Even when I broke a chrome moly inner and ujoint..... Still running that same lockout. I've carried a spare lockout, and a spare drive flange on all my ventures.... They've stayed in the tool box. I was concerned at first... I'm not anymore. Now I have rcvs and stock lockouts.

For everybody who thinks they are junk, I'll gladly buy them off you for junk pricing lol.
Little late to this question but just to mention I've got pretty much the same resume as above - Moab multiple times, Colorado trails like 21road etc on a JKU with 42" stickies on 08 SD axles with RCVs and running the Warn Premium hubs with no issues. Carrying some flanges for insurance just in case but no issues with the Warn premium hubs.
 

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hi-steer ninja
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I believe the answers are here, but, 05- current f250/350 castings go like this:
05-08 is gen 1
09-12.5 is gen 2, same as gen 1 with a hole in it and slightly different caster, swappable with gen 1
12.5-16 is gen 3, caliper mounting ears moved apart for bigger brakes, bj spread the same as all 05-up
17-18 is gen 4, 1550 shafts and very different casting from others
I can add casting id numbers later if wanted..
F450/550 stuff is different bj spread. Different animal..
 

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But at which point did they start setting the steering stops to allow the ridiculous 45 degrees of steering angle?
I think it was some time in the third gen ones, but got no info on actual changeover.
 

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But at which point did they start setting the steering stops to allow the ridiculous 45 degrees of steering angle?
I think it was some time in the third gen ones, but got no info on actual changeover.
I suspect a F450/550 feature? The wider track leaves more room between the tire and radius arm...
 

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they offered the f350 in a wide track version starting in 2008, thats the one with sharper turning like the 450/550

based off how long the short side tube is and not having 450 size inner c's my bet is rock apes axle pictured above is a wide track f350

most of the f250/350 axles dont have such a long short side tube, this is all based of my observations so i could be wrong.
 

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hi-steer ninja
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05-up f450/550 have 45 degree steering. 05-up f250/350 i think are around 38-40 degrees stock. I havent measured it but 99-04 was 32 degrees stock. It is virtually impossible to use much more than 40 degrees with a link type suspension and 40" tires due to link to tire clearance with available mounting points on these axles. Any of them can turn 45 degrees by cutting stops..
 

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Storing Junk
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Okay, so just to make it clear, if one wants 8x170 on a 2005+ F-550, use a 2005+ F-250 unit bearing and a 2003 F-550 rotor.
Found it by accident here - http://www.pirate4x4.com/forum/general-4x4-discussion/1086357-ford-super-60-axle-question.html

Okay, so here is a really weird (dumb?) question.

Does anyone know whether it would be possible to mix and match brake components on the F-250 and F-550 axles?
I looked up information for the model year 2006, XL package so no goofy wide track on the F-250.
The F-250 has a front rotor with an outside diameter of 13.65 inches.
The F-550 has a front rotor with an outside diameter of 14.53 inches.

If a person were to use the unit bearing from the F-250, thereby having the 8 lug pattern and requiring the smaller diameter rotor, but used the caliper off of the stock mount with the F-550 and the F-550 pads, would it even bolt up?
Does anyone know if they are even the same thickness rotor?
It occurs to me that the smaller diameter rotor might mean that the outside most portion of the brake pad "misses" the smaller rotor, thereby reducing the effectiveness, possibly a lot.

Additionally, what more problems does anyone foresee?

(Shall I duck for cover now?)
 

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If a person were to use the unit bearing from the F-250, thereby having the 8 lug pattern and requiring the smaller diameter rotor, but used the caliper off of the stock mount with the F-550 and the F-550 pads, would it even bolt up?
http://www.pirate4x4.com/forum/general-4x4-discussion/1086357-ford-super-60-axle-question.html#post14725795

Some '04 F450 & F550's use the same size (14.53") rotors as the 05 and newer F450 and F550's but with a 8 on 170mm bolt pattern. Use them with the '05 and newer F350 unit bearing and the '05 and new F450/F550 caliper to convert '05 and newer F450/F550's to 8 lug.

^ I checked some rotor pics and specs on rockauto, and he's likely correct.
 

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I believe this is correct as I had an 04 f550, I was going to try and convert to a 05+ front for the strength and ride quality but it seems like my 8x170 to 8x225 factory adapter wouldnt fit over the larger 05+ hub.I ended up getting an offer I couldnt refuse on truck so it left before going through with conversion. Fourwheeler mag actually converted a super 60 that way with the 04 rotors but they were looking to run the standard 8x170 wheels so it worked fine for them.


Its said in 3rd paragraph http://www.fourwheeler.com/how-to/transmission-drivetrain/131-0906-dana-super-60-front-axle/
 

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That's right about what a set of super 60 gears from dana cost me for 5.38s
But were the Dana's thick or thin? Looks like the Nitros are thick only.

I'm assuming the real Super 60's with 4.30+ ratios have 4.56-up cases...and thus the Dana's would be "thin".
 
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