Super Duty Axles

[LCAM-01XA]

I there were some catrostrofic failure, and the primary/service brakes failed and you applied this driveline brake and say, a U-Joint fails.... what do you do? Starting looking for a "soft-looking" Prius? I know this is a unique situation.... but...... I thought you had to have an "emergency brake" on vehicle.......

It's also an emergency brake, yes - and I'd think that if the U-joints can handle the drive torque needed to get a fully loaded F-Superduty moving, then they should be able to handle the braking torque, especially given how that is not anywhere near as high as the engine torque multiplied through the trans in 1st gear...

 

[jam0o0]

^ it's actually not higher. if you can spin the tires on dry pavement loaded and the brakes can lock up the wheels with the same conditions then, the forces on the u-joints are the same. torque input in most cases is limited by engine torque or traction.

 

[LCAM-01XA]

You're probably right, I was thinking that locking up the rears once moving at a decent rate of speed may be easier than trying to spin them from a standstill...

 

[Diesel_brad]

99-04 SD front axles have a wider perch width. BUT if you use a 05-07 Sd front axle, you can use the coil springs, radius arms and have a WHOLE LOT better turning radius and ride. it is practically a bolt in deal. I have seen it done 3-4 times. talk to CARY at http://www.ctperformanceinc.com/
He has done the swap several times

 

[LCAM-01XA]

See that's just what I wanna do when I go 4x4 some day, solid axle and coil springs. Too bad about the whole metric bolt pattern tho... Actually do the dually trucks have the metric bolt pattern too?

 

[88beast]

dually has metric van dually dont
the van thing is best because its bolt in
the f super duty front being 10 lug is an easy fix
youre local machine shop can take the hub of the 60 and 2wd f superduty hub and cut them then turn them to match and weld up creating a (if done right) very strong bond and sturdy hub
guy i know tows a lot in snow and had it done so hed have 4x4 hsd s piece of pipe put inside and welded too
but i think they are cast so theyd have to be done professionally he paid less for the adaptors than for the front 60
also the spring perches can be moved easily
but if you really want 19.5s and rear disc then do a 60 swap and run the van rear
you have 2 options that are realistic for 19.5s one chevy 19.5 stock 8 lug rims (on 3500hd and those huge **** vans) and two an after market 8 lug 19.5 alcoa style
rickson wheel has them for a damn good price considering 19.5s for a semi
adaptors are junk
aluminum ones break garenteed
steel is fine but they rust very easy and can be cheap steal
but have you seen one of those contractor guys running them for 10-15 years no so ya they haul a lot but how do you know they dont already have smal fatigue cracks waiting to break

the problem with aluminum is that it fatigues over time if its breaking strength is 5000 lbs you can put 500 lbs on and off over and over and itll snap itll take a long time and a lot of lifting but itll snap steel wont
pardon the long post
hope i helped

 

[LCAM-01XA]

Van front does me no good as it ain't 4x4, and the rear (desirable for the disc brakes) won't line up with the truck springs.

I don't think I'd trust any machine shop for welding up two cast hubs together, it's just one of those things only a welder with years and years of experience could do. What I would trust is billet steel adapter rings, but those are also a custom job, however much simpler.

The 3500HD Chevy uses 19.5" wheels, yes, but they are not 8-luggers - they have 10 holes in them, the rear axle uses 10 studs so all the holes are utilized, the front I-beam has only 5 lugs per wheel so half the holes remain empty with the wheels bolted on. The only factory 19.5" 8-lug Chevy wheel that I'm aware of came on the P30 cutaway vans (the ones with a setback front axle), and they will not clear the Ford hubs without machining the center opening out a bit.

As fpr aluminum adapters being junk, "guaranteed" at that - well we agree to disagree on that, as I have seen what some people put their cars and trucks through with those, and it's more than I'll ever push any of my vehicles.

 

[Diesel_brad]

See that's just what I wanna do when I go 4x4 some day, solid axle and coil springs. Too bad about the whole metric bolt pattern tho... Actually do the dually trucks have the metric bolt pattern too?

Yes. 8 0n 170mm

 

[rjjp]

Do the 99+ Ford "SuperDuty" trucks without ESOF still have a unit bearing? The truck in queston is my dads 2005 F250 FX4, no ESOF manual lockouts and manual shift transfer case.

 

[snicklas]

Yes I believe they do..... they change the design on the axle, so even it if has manual lockouts, which even the ESOF lockouts have a manual side also, I would say that yes the have unit bearings, just not the vacuum lines to run the ESOF hubs....

 

[hesutton]

If you make the drive south in the next month, I will be killing off a '90SD. the front and rear axles are yours for a case of Coors reg in a bottle I know nothing about the history of them other than the truck I bought to kill.

Disk or drum on the rear Dana 80? What ratio? Any chance you'd be coming to the Rally with that axle in the bed of your truck? I'm looking for a good rear Dana 80 to build for my DT466 repower.

Heath

 

[towcat]

Disk or drum on the rear Dana 80? What ratio? Any chance you'd be coming to the Rally with that axle in the bed of your truck? I'm looking for a good rear Dana 80 to build for my DT466 repower.

Heath

heath-
my D80's are all disc rear. count on 5.13 ratios. If they are 4.63's, I wouldn't be getting rid of them. Let's see how good your powers of persuasion with Gary are I don't know if I can make it to the rally this year, so Gary is your better bet
I already salvaged out the truck mentioned in this thread, but there will be more to come.

 

[stonecrusher]

Its an easy install, they pretty much bolt right up. If it is a 98.5- 2011 super duty though they have a metric bolt pattern which is 8 on 170mm and 8 on 171. the old school super duties were 10 lug I though.

 

[hesutton]

heath-
my D80's are all disc rear. count on 5.13 ratios. If they are 4.63's, I wouldn't be getting rid of them. Let's see how good your powers of persuasion with Gary are I don't know if I can make it to the rally this year, so Gary is your better bet
I already salvaged out the truck mentioned in this thread, but there will be more to come.

Let me know of any others that come along. If so, I'll try and sweet-talk Gary to hual it east for me if you can't make it Calvin (Hey Gary... have I told you lately how much I love your truck and what a nice guy you are). I'll certainly be re-gearing the Dana 80, upgrade that axle shafts, swap on 8 lug hubs, and adding a Detroit locker.

Thanks again.

Heath