Today I wanted to drive my 62'today, so coming back from the post office going to the hospital to visit my grandma. I went to take off from a 3 way the truck almost stalled, I had only about a 1/2 - 3/4 inch for shifting from the floor board.

I did an experiment, if I had taken the lid off the master cylinder the clutch pedal was firm like it is supposed to. But after I had put the lid back on, got back in the truck pushed on the clutch pedel, it went back to the floor.

Not to mention if you looked at the clutch side of the master cylinder, little bubbles came out.(while the lid was off) The only thing I didn't do when I had gone through all the brakes and stuff I didn't replace, or rebuild the slave cylinder. :o
Check the fluid level in the master cylinder, if you let it go down too far you'll get air in the lines, and then the lines will have to be bled.
I didn't check mine for about a month after I brought it home, it only had maybe a 1/8 of an inch of brake fluid at the bottom.
Chevyboy62