Caliper and Master Cylinder Info

mguner said
Yes but those calipers are of a different design. That is why I specifically mentioned the A, F and M bodies. They use the same pads which mean the calipers interchange on the spindles for an easy swap. If you pull up the 10-1571 in the PDF it shows 15/16 as the bore and it is the factory MC for my 75 Duster.

Yes, the E-body stuff was the pin type caliper. But actually, so were some of the later cars. I've harvested pin style calipers off of 76+ cars, they came on some of the B body stuff for sure. At any rate not all the 76+ calipers are the slider type either.

Anyway, I get the point, you can swap in 2.75" calipers onto an A-body with the 2.6" slider calipers just by bolting them on if you use '76+ slider calipers. I just wanted to clear up that the 2.75" calipers didn't just start in '76.

mguner said
If you require that much volume it would seem the rear brakes are too far off the drum. Disc brakes ride the rotor so that is not where your volume is required. If the rod is not the correct length of the MC is not spaced properly you may not be allowing the MC to draw fluid. That is where the spacer comes in on mine. It wouldn't pick up fluid to bleed until I let it back off the adapter plate about 1/4 inch.

I'm pretty sure the car he's talking about is a C-body anyway. Not that it should matter, but he's brought it up before saying that the 15/16" bore is too small, which isn't true. I've used the 15/16" on A, E, and B body cars with no issues whatsoever. Maybe the C-body pedal ratio is totally different, but I would bet he has something else going on.