I have a 77 F100 2wd with a 302 3-speed and manual disc brakes. I have a 75 F100 2wd with a 302 automatic with power disc brakes as a parts truck. How involved is it to convert the 77 to power brakes? Using the power booster, brake cylindar, and maybe pedal? Any differences between the automatic and manual brake pedal assemblies that would cause problems? Any new parts I would have to locate? The parts truck is complete and original as far as I can tell. Parts truck also has power steering while mine is manual. I figure that is alittle more involved to change, but all the parts should be there.

 

i remember a post not to long ago stating that brake pedals where different for each set up, so just to be safe id take the whole assembly and install it. of course you are going to have to bleed the master cylinder before you intall it and all other lines after you install it.

 

I did this conversion on my 76. You will need the pedal assembly (Manual assembly is different from automatic assembly and power is different from manual ). You will need the booster, master cylinder, pedal rod, and proportioning valve. For the cost of the parts, it would be worth using the old parts as cores for new/rebuilt pieces.

 

Thanks guys, My parts truck is an automatic. So am I to understand that the pedal won't work for my manual setup? I also read that post about there being 22 different pedal combinations between 73-79. I would think all the pieces off the parts truck are good as it ran 2 years ago. Worth a try anyway.

 

The pedal assembly on the automatic truck won't have the clutch pedal neccessary for your manual trans. Its best to get all of the parts from the same truck when doing the swap so the pedal, rod, etc all match. I got my stuff from Mikes Truck Salvage. I have three emails for him, I think they are all good: Mikestrucksalvage.net, Mikestrucks@aol.com and Mikestrucksalvage.com

He sometimes takes a few days to check email, but his prices are fair, he is willing to help with info.

 

My 76 began as manual, then I made it automatic, now its manual again. As far as the brake pedal, no difference. The clutch pedal has a shaft welded to it that goes through the brake pedal. The automatics I found in the wrecking yard, simply had a bolt that replaced the clutch pedal shaft. The brake pedal was the same. My 79's have a different pedal assembly. I suspect the 77 differs from the 75. I have manual brakes on my 76 and power on my 79. I find very little difference. Power steering however is a great upgrade. Be aware that the length of the non power steering column is longer than the power steering column so you will want to get a power steering column. I had a heck of a time separating my drag link from the pitman arm. I was beside myself with pickle forks and pitman arm pullers. Eventually when I thought I was whipped, I made one last hit, and "tink" the parts separated. Be aware that there were many power steering pumps used. Thompson and Saginaw pumps seemed to be used with no rhyme or reason. Take note of what year and model and engine size of the truck you got your pump from, otherwise it's tough to figure out what high pressure hose you need. Parts store guys often aren't very creative if you don't give them a year and model.