Texas69 wrote:I have a 2002 F250 with hydroboost with 4 wheel disks. If I found a donor like mine and put the hydroboost and master cylinder on my 69 F100 I should be able to install rear disk brakes? I'am in the process of converting the old front drum and steering to a 1973 front disk and power steering set up.
Yes you can, but you will have to balance the system with a prop valve. superduty hydroboost is really strong and will lockup the back discs on such a light vehicle as your truck.
Also finding a 9" rear axle with discs to donate to yours will be fun. Your truck should have the small bearing rear end and the only vehicles I know with that setup are old Thunderbirds and Lincolns. Again I have another article on this subject (rear discs) that I am willing to share if Keith wants it.
Keith is right, try Hydroboost with your disc/drum setup. I am sure you will find this to be more than adequate braking power.