Has anyone seen a hydroboost put into an F600? Want to get rid of the vacuum booster under the floor for more modern system. Would it hold up to the large wheels 22.5s?

 

GMC ran them off the power steering hydraulic pump with 10:00 R 22.5's so it is possible.
Down side is it would be all custom and non OEM. A lot of liability in stuff like that. If you don't know a lot about brakes it is probably a bad idea.

 

Ford f650s with cummins run them...
I have looked at the following
4WDB conversion from an F450/F550 using hydroboost

Each caliper is rated at 15k
1991 and later F450s used a 4wdb master that looked pretty easy to adapt

As poster above stated.. all custom.. from firewall reinforcement, rod length, hoses and lines, steering bracket and pump

I may be facing this by default on my F600/F650 axle swap.. further to follow.

 

I will be making some changes to the brakes on my F700. I don't know yet if I will be going with hydroboost or vacuum. I just know that I am not comfortable driving it on the road with the OEM system.

I don't know what the engineers were thinking with one line from master to booster and one line from booster shared to front and rear. One little leak or issue anywhere in the system and you have no brakes.

So I understand the liability in going custom, but to me any split (front/back) system is a vastly safer option to OEM.

 

All of the Fords I recall with hydro boost also had girlinger rear brakes. They used two hydraulic pumps as the parking brake was also hydraulic. If GMC ran the steering and hydro boost off the same pump. I do not see why you could not do the same thing. Just follow their pattern.
Have to wire in the electric over ride. Drum-drum, drum-disc, disc- disc valving. Why not?