Questions on 90's F450 Superduty

[Tex1978]

OK, have a early 90 F-450 Superduty (4x2) heavy duty truck. It is the kind with the leaf spring front suspension and really low rear gears (5.13's I believe) and it has 10 lug rims. Is the rear a Dana 70 or 80? It has disc brakes in the rear also. Does anyone know about these axles? Can you convert them to 8 lug, what kind of market are there for them? Any help is appreciated.

Thanks

[u2slow]

Its a Dana 80. 37-spline.

What are you trying to change the bolt pattern for?

[Tex1978]

I figured it is of no use to anyone (at least in the 4x4 arena) with the 10 lug bolt pattern.

[Jrod-13]

the whole point in the 10 lug wheels is to run standard 19.5 rims, and heavier rated tires... you would potentialy be significantly reducing the capicity of the truck..

[Tex1978]

I could care less what the freakin thing will hold up. I guess I failed to mention the truck is trashed and I want to pull the axle. What use is it to us wheelers???

[JJS]

i would sell it as is, and advertise it as a 10-lug dual rear wheel dana 80. someone with a medium duty truck could use it.

[u2slow]

Those trucks are still commonly used as towtrucks and flatdeck delivery. There should be a good market for that axle.

The other juicy item is the trans-mounted parking brake. Its considered non-serviceable and is big $$$$ from Ford.

[Tex1978]

Cool, I was unaware of the tranny parking brake. The truck had a cab fire, so I hope it did not get any of the tranny stuff messed up. The guy said it had a fresh tranny in it.

Thanks

[82F100SWB]

The trans mounted parking brake, besides being a big $$$ part, bolts on just like a T-case, so, the trans is a 4x4 unit, not a 2wd one, again, adding value.

[Tex1978]

How does the addition of a parking brake make it a "4x4" in a sense???

[82F100SWB]

The parking brake bolts on to the tailhousing using the same 6 bolt pattern as a transfer case would. Pull the brake off, and a T-case bolts right on in it's place.

[Tex1978]

OK, I follow now. What case bolts onto it? Isn't it like a BW1345 or something like that?

[brokebronco]

Was it an auto or a stick, and what kind of engine was it?

Chris

[82F100SWB]

It would have been a BW 1356 in the 90's, but, pretty much anything Ford with the 6 bolt pattern will bolt on, including the 205 and 203.

[Tex1978]

It was a stick, I know it was a diesel, but not sure it it was a turbo 7.3 or just a plain one. Where do you guys think the best place would be to sell this thing/part it out?? Or should I try to sell it whole, it has a good non skirt sided flatbed on it, not a Western Hauler type.

[Tex1978]

So does anybody know how to change this to 8 lug?

[WA-HCRC]

there are adapters to reverse what your doing, im sure you could call or email a machinists/ adapter company.

[82F100SWB]

Hubs off of a Dodge D80 maybe?

[Tex1978]

I don't know if that would work or not, but that is a thought. I am sure somebody knows.

[u2slow]

So does anybody know how to change this to 8 lug?

I think the bearings & spindle are too large for the 8-on-6.5" bolt circle. This is true for the GM 10-lug stuff anyways. The Dodge Dana 80 is a hybrid... a D80 center section, but the outers and shafts (35-spline) are no better than the D70 goods.

IMO, its less work to make a D60 front 10-lug. Either weld a 10-lug flange to the hub, or order up the OE 10-lug hubs that Marmon Harrington used to convert the early Superduty to 4x4.

Sample pic (http://www3.telus.net/u2slow/misc/MH-d70-f450.jpg)