About the hidden remote booster.
I made one, but I would not recommend it, here is why:
You now have two systems to fail, the one going to the booster, and the regular brake system after it.
The system before the booster is a single system, it fails everything fails.
In my case I had little to no room on the firewall for a master cylinder, and the original single circuit just barley fit as the valve cover had been dented for clearance. I had no room for a 90 degree bracket like from a "bread truck".
I did use the original master cylinder, then a clutch slave cylinder, with one line in between this was the first part of the system, and the weakest. The "clutch" slave worked the push rod on a hydrobooster attached to a dual circuit master cylinder, and the rest of the system is normal from there. This let me install the booster and real Master cylinder under the cab where the Hydrovac was originally. Pictures of this setup on my link below under ford with 6V53T Detroit.
I gained boosted brakes for the huge disc front and rear. Non power brakes was absolutely not an option, (10,000 lb empty at up to 85 mph). the down side is the added complication and single line system to fail.
For the truck actually in question in this thread, I asked what speed, you say 70 and think it's not too fast. I say 70 is really fast for a single circuit master cylinder, and a great candidate for boosted brakes.
Personally I have had great luck and stopping power with original manual brakes, but that's 55 mph tops.
I think that much more than that and a dual circuit is a great idea, even if it does not help any it does help the safety factor, and that's a huge improvement, both for your safety and those around you.
Boosted brakes are nice, and while not always necessary I think always appreciated.
Grigg
