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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

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  #1  
Old 01-31-2011, 08:13 PM
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Have a 91 F350 Super Duty parts truck, ZF5, rear disc questions.

So I pretty much have a 91 f350 Super Duty parts truck at my disposol(minus the motor, cant touch it). Already nabbed the ZF5 2wd(lol it is really a 4x4 ZF converted to 2wd via a trans brake), and the Hydroboost system. All the parts are going to go on my 85 F250 with a 460 and 2wd C6.

So for the Zf5 I have the trans cross member and its respective wings, the flywheel, the shifter+****, the clutch dust cover, and the floorpan cover. Also have the driveshaft but in my sloppy measurment it is the exact same one that is already in my truck. Am I missing anything here? I am going to just have my driveshaft lenghtened to fit. The C6 in my truck now is about 4-5 inches longer than the 4x4 converted to 2wd Zf5 I have. So a real 2wd would need the driveshaft extended even more.

Here is the trans:
Click the image to open in full size.
Click the image to open in full size.

The Hydroboost I have the booster, the lines, and the PS pump resevoir(lines are still connected between the two actually). So for the Hydroboost that is all I need right? The truck was build 06/91 so I am not sure on the cut-off for needing the brake pedal? Do I need it?

So the f350 has rear disc brakes. Can I use these? My rear end is a Sterling and the rear end on the f350 seems to be a Dana 70. The F350 axle housings are thicker than my F250's. It doesnt have a limited slip from what the owner says to(one wheel motion action in the mud, etc). But was just curious if the brakes can work on the Sterling perhaps? If it comes down to it, would the Super Duty rear end fit on my older F250? More curious than anything dont think I am going to go through the hassle of swapping(need the MC and porprotion valve) them but just curious.

Is there anything off the parts truck that I may have overlooked that would be cool to have? My truck is mainly going to be used for towing a max of 5000lbs, if the intended use is needed to answer.

Thanks guys.
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1985 Ford F250 Supercab Dually: 460 w/ a C6 and 4.11 gear
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  #2  
Old 02-01-2011, 02:54 PM
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The Super duty rear is a Dana 80, with either 4.88 or 5.13 ratio, Pretty much nothing off of it will easily swap to a standard truck, the spring spacing is the same as a F350 cab and chassis dually(narrow frame) though.
For discs for your truck, either aftermarket brackets with chevy calipers and 90's E350 rear rotors or adapting the entire E350 brake setup are the best options. Being you have the driveline brake, the $50 brackets and chevy caliper bolt on setup would be the way I'd go.

But, for what you're out to tow, a good working set of drums will be fine, and hydroboost will be plenty.
I'd grab the pedal out of the 91 if nothing else so you have it to compare to your existing one.

With that ZF, make VERY sure the seals in the brake assembly are good and that the oil is full. I know they have a very small oil capacity and they are very expensive to rebuild if they run low on oil.
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  #3  
Old 02-01-2011, 03:57 PM
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Go with brackets. I got my disk brake brackets for my sterling. Ruffstuffspecalities. You use a e series rotor, and chevy 3/4 front calipers.
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1983 F-250HD 2wd 300. T18 4speed 4.10s. Base. 170k Hiding in garage for the last 10 years. dead. dads truck. Project truck.
1991 F-250HD 4x4 351w ZF 5speed 4.10s Custom. 165k old plow and landscaping truck. Parts truck.
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Old 02-01-2011, 04:21 PM
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Cool, the Ruffstuff brake brackets are sweet. Cheap too! Onus do you have any pics of your setup? I assume it is easier to do this than to re-do and adjust drums? I am a disc brake kinda guy, my truck is the only vehicle I have ever had that has drums. And what did you do for the e-brake? You have to redo your brake lines?

82F100, I will research more about the trans drum. In all honesty I was just gonna leave it alone because I dont plan on using it, but if I am going to go the disc brake route with Ruffstuff might as well use it right?
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1985 Ford F250 Supercab Dually: 460 w/ a C6 and 4.11 gear
1989 Ford Probe GT Turbo and 1995 Ford Probe GT:
http://www.ford-trucks.com/forums/im...ine=1214714627
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  #5  
Old 02-01-2011, 05:58 PM
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Click the image to open in full size.

Thats the Ruffstuff setup installed. No E-brake with the chevy calipers, you can do a caddy caliper setup, but they're expensive and apparently are a royal pain to keep adjusted.

I'm pretty sure to keep the 2wd style output on that ZF you have you are going to have to keep that brake on there. And if you go with pretty much any aftermarket rear disc setup, it will be your best bet for a parking brake.
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86 F250 HD 4x4, 6.9/T19/broken D44 TTB junk/10.25.
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  #6  
Old 02-01-2011, 06:55 PM
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1st to stop any more confusion. your parts truck is NOT a F350 superduty. It is a F-superduty or also known as a F450


Is your truck a F250 dually conversion or a F350?

What engine was the ZF in front of, if a 460 you are set, if a diesel, you are screwed.

For the clutch pedal, you will need one from a 80-86, the 87-91 will not work

For the rear brakes, just leave your drums on the back(Nothing off the D80 F450 axle will work on your pick up )

Driveshaft i would bet re different length but with your pickup being a C6 it may some how be the same length as a C-n-c
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Old 02-01-2011, 07:02 PM
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I was planning on not having the cable hooked up I mean. I will definitiley have to keep the actual drum/brake unit attached to the trans. But was planning on having it be more of an extension/2wd adapter haha.

The shifter is really tight and the rear yoke/trans brake spins freely and smoothly. So I hope my Zf5 is good. Only thing I am worried is that it only had atmost 1.5 qts of fluid. It was still red and didnt smell unusual or anything. I drove the truck on the side streets(nothing to warrant 4th or 5th gear) and the trans seemed fine, no grinds nothing. However, 1st gear seemed to be like the clutch was slipping, RPMS would rise but the truck "felt" slow. Is this just because it is a granny gear?

That setup looks sweet 82F100! Did you have to redo your lines so they have a hose for the caliper? What did you end up doing for an e-brake?

Diesel Brad:

The truck says F350 on the side, but I agree when looking for parts the Super Duty line is only designated to the F450. The parts truck has a 460 in it yes. And my truck I have no clue honestly if it was converted or converted with what. I am pretty sure it is a conversion truck but I bought it in its dually state. The VIN, door tag, and the emblems say my truck is a F250.
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1985 Ford F250 Supercab Dually: 460 w/ a C6 and 4.11 gear
1989 Ford Probe GT Turbo and 1995 Ford Probe GT:
http://www.ford-trucks.com/forums/im...ine=1214714627
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Old 02-01-2011, 10:04 PM
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Your truck is an aftermarket conversion, Ford never built a factory F250 dually, odds are your truck is a centurion or something along those lines.

My rear brake setup mimics a 70's Ford front, short flex hoses from the calipers to the axle tubes, I think I ended up with Dodge parts... LOL
As for a parking brake, the big lugs on my 44 boggers against the front leafs work pretty well. My truck is pretty much non street use, and I have a spare mechanical mico lock from work, so thats what it's going to get, it's pretty much a mechanical operated line lock.
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96 F350 Crew Psd/5 speed,/4x4... $600 special
96 F250 XLT PSD/5 speed/4x4... Freebie!
92 W250 LE, 4x4/CTD/G360/D60/D70U
86 F250 HD 4x4, 6.9/T19/broken D44 TTB junk/10.25.
8? F100 4x4 Mild 460/T19 D60/welded 10.25/44 Boggers,
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  #9  
Old 02-01-2011, 11:17 PM
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I don't have the brakes installed yet. But i have all the parts for when springtime comes. For ebrakes i was just gonna run without one. My ebrake bracket imploded awhile back as it was so rusty. I've never used a ebrake in any car ever, neither have my parents. I guess its not legal but my drums suck. If i need an ebrake i'll put a linelock, and not the electric ones. Luckily all my brake lines are brand new .
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1983 F-250HD 2wd 300. T18 4speed 4.10s. Base. 170k Hiding in garage for the last 10 years. dead. dads truck. Project truck.
1991 F-250HD 4x4 351w ZF 5speed 4.10s Custom. 165k old plow and landscaping truck. Parts truck.
1990 F-250HD 2wd 7.3idi e4od 3.55s. Custom 360k 'The Carpathia' Daily driver.
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Old 02-02-2011, 11:35 AM
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The rear disk swap may not be as easy as you think.
Most kits will not work on a dually due to the inside rim clearance.

The other problems with the F-superduty axle is that it is 10 lug and width is too narrow to work with a pickup box. Your current truck probably has spacers on the front for the duals. Also around 85 most of the trucks came with the 10.25 Sterling instead of a Dana, but your truck is probably custom.
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Old 02-02-2011, 11:35 AM
 
 
 
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