Hy Ken 1960, according to my brake book, from 1960 - 62 a C10 could have had a slave cylinder with a 1" or a 1 1/16" bore. Yes they are talking about the size of the piston inside the slave cylinder. You bleed the slave cylinder in the same way you bleed a brake wheel cylinder, open the bleed screw when the clutch pedal is up, push the clutch pedal to the bottom and hold, close the bleed screw, let the clutch pedal up and begin the process again, until only fluid comes out of the bleed screw, hope that helps.
