The 1-1/8 master needs a booster IMO. I'm pretty sure that's the master that was in my 82 Cordoba. I removed the booster for valve cover clearance and made a spacer to take up the space that the booster once filled. The pedal was rock hard and the car was a handful to stop. I didn't know any better at the time but a master with a smaller bore was needed. Does the OP have a booster or do you have manual brakes?

Replacement boosters on Rockauto are inexpensive. Might have to experiment with a couple different sizes.