I spent a lot of time under my 85 and in it trying to get peddel. I replaced both slave and master. Got all the air out and still hads to push the peddel so far down that I broke the back of the seat out. Finialy took it out to an old ford man. 15 min. and $20 later I was running. He found that the bushing on the clutch peddel was worn thruogh. It's where the piston from the master cylinder hooks over the pin on the peddel. also by removing the cotter pin ,washer, and rod, the rod can be turned to increase peddel. Only one turn atv a time, assem. and test. turn again if needed.