First time having manual brakes, are mine bad?

First time having manual brakes, are mine bad?

The 15/16” master cylinder should be fine with manual 73+ disks and rear drums.

I have run my ‘74 Duster with a bunch of different manual brake combinations. I started with the stock 1-1/32” manual master cylinder with the stock 10.95” rotors and 2.6” piston slider calipers and 10x2.5” disks out back.

Then I went to 15/16” manual master cylinder and have run

B/R body 11.75” disks/11x2.5” drums
DoctorDiff 13” cobra disks/11x2.5” drums
DoctorDiff 13” cobra disks/DoctorDiff 11.7” disks.

I also ran my ‘72 Challenger with the 11.75” disk/11x2.5” drum brake combo with both the factory master cylinder and power booster and then the manual 15/16” master cylinder, and much prefer the feel of the manual set up. It definitely takes some leg, but both cars stop great. And honestly, the Duster stopped well with all of the different brake combinations. It stops better now with the large 13”/11.7” disk/disk combo, but the braking was never scary even with just the factory set up.

If you’re used to driving modern cars with power boosters and/or ABS, a manual disk, non ABS system will feel very different. You have to push the pedal, it’s not a light touch. But the car should also still stop well when you apply the brakes.