Anyone know what the bore size would be on my '80 chevy 3/4 ton brake master cylinder?

I am planning on putting discs on the 14 bolt, and I wanted to know if my master cylinder would be up to the task, and I was also curious what the bore size was on the master cylinder. Thanks for the help.

I would guess yes. If not they are pretty cheap. To find out just pull it off and measure. Its only 2 bolts. I got a hydro assist master cylinder to work on my 85 k5. The thing is incredible, it locks up all four(D60, ff14) in about an inch and a half of pedal travel. Was $40 rebuilt.

Charlo