Brakes or kind of lack there of.

[cbfomoco]

Ever since I have gotten my 68 F350 the brakes have not been quite right. I do know that unloaded the brakes should grab and hold/ slow me down better than they do. I replaced all components on the rear end Wheel cyls, Lines, shoes, hardware, etc. I have also replaced the front rubber lines to the calipers. ( This one has the factory power disk brake set up) After bleading numerious times and a new master cyl and bleading them again I still just have so so brakes that I just dont think are totally working right. I have also noticed that the brake light on the dash is unhooked. Is it possible that there is an adjustment on the distribution block that I am missing? ( as it seems like the front kind of grab and the rear not much at all) The only thing I have not replaced is the front calipers which look fairly new, all the lines- hard, and the booster. I am kind of at a lose here. I dont mind to replace parts and spend the time and money on them if they will fix it but I feel like now anything that I change is just a shot in the dark. Thanks

[two-bit]

If you pump the pedal quickly three times, do you get better pressure/stiffer pedal?
If so, you either still have air somewhere, or your rear shoes are WAY out of Adj.
I am not real familiar with the factory front disc set-up, my DRW has 4 drums .
I assume you get good fluid pressure from all the bleeder screws when bleeding? If not, you have have a restriction somewhere.

I'm not sure who you got the master cylinder from. I have had three rebuilts in the last 6 months fail the bench bleeding test. The quality of some things has really gone to hell.

Best of luck with your brakes. I don't know anything about the propo valve your truck would have. It could be out of center, causing low pressure feed to the front. However i do not know how to test for that.

Two-bit

[fordman]

when you bleed the front brakes. did you push in the pin on the front brake proprtioing in valve on the back of the engine crossmember? if not then the fluid didnt get bled out right.