go from rear caliper towards mcyl . with someone holding a little pressure on brake pedal. crack /then shut, bleeder and each line fitting one after the other till pedal goes to floor . that will show where potential restriction/blockage is .
i have SSBC front brakes , metric rear GM calipers and a 1 1/32(?) master , works fine street and strip .

Tex


New best ET 10.259@129.65 .
New best MPH 130.32
Finally fitted a solid cam,
stepped it up a bit more
3690lbs through the mufflers
New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm
Power by Tex's Automotive