Disk brake swap

Suspension, steering, brakes, wheels & tires

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cancow
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Disk brake swap

Post by cancow »

I would like power and front disk brakes on my 67 F250. I found a 67 donor truck that has power brakes. Can i use the power brake parts and add disks to the front? I know about the swap from trucks up to 79 but what about for an F250? I dont really want to remove the whole front axle for disk brakes like i have seen on this site. The front end of my truck is in great shape and i want to keep it. Any suggestions?
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FORDification
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re: Disk brake swap

Post by FORDification »

Disc brakes were an option on the F250's starting in '68, so to keep your current I-beams matched up with a correct spindle, you'd have to find a '68-'72 F250 with factory disc brakes. The disc brake assemblies for the '73-'79 F250s are a dual-piston caliper (not sure about the '68-'72 F250s though), so an F100's won't work...the spindles are different.

Your biggest liability actually is going to be the bump stop on your '67 I-beams. The small piece of round stock that acts as the bump stop is a one-year-only item for the '67. Starting in '68 they were cast into the I-beam. I don't have any specific experience with the '68-up F250 pieces, but I believe they should work OK with your I-beams, but you might need to do some minor trimming to that round stock where it meets up with the spindle on a hard turn, otherwise your turning radius is going to be decreased. However, when investigating the disc brake systems from the next generation, I found that '73/'74 I-beams have the same bump stop configuration of the '68-'72, so if you can find a '73 or '74 F250 with discs, you should be able to swap the spindle in, keeping your current I-beams.

Take a look at the new disc brake tutorial at http://www.fordification.com/discbrakes01.htm and at the tutorial I wrote up where I was comparing the spindles and I-beams at http://www.fordification.com/Ibeams&spindles.htm . By using the kingpin dimension chart I've researched and posted there, you should be able to find an application with the correct kingpin size to use as a donor truck.

As for the power booster, as long as the booster has the mounting brackets, it'll bolt right up to your truck, with only a minor rebending of the existing brake lines.
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willowbilly3
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re: Disk brake swap

Post by willowbilly3 »

Also there are two different I-beams used on F-250s. A standard and a heavy duty so you will need the correct spindles if you aren't taking the I beams.
The dual piston set up on the 68-72s is a great system but for a conversion I think I would try to find a single piston system from a 73 and newer. I am not sure what Fords criteria was for application but both the single and dual piston F-250 disc brake systems can be found. The double piston may in theory work a little better but parts are alot less expensive for the single piston and they are easier to work on.
And unless you have a way of removing kingpins where the donor vehicle is, get the I-beams and all. strip them down and take them to a shop that can press them apart and put in new bushings (pivot end too) and be done with it, If you do not have experience replacing king pins I guarantee you will wish you had done it this way before you are finished.
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