[gasman]

Is there a difference between master cylinders for a car that has 4 wheel drum and a car with rear drum and front disc? I have a 68 dart with 4 wheel drum and I have parts to change to front disc from an unknown donar car but I have no master cylinder for disc but I do have a good one from the drum set up.

 

[bOb shingler]

if it's cast iron, toss it and buy an aluminum one.

 

[moparrr07]

yes, the front back is split 60/40 or 70/30 unlike the drums which are 50/50

its also has a residual valve

many people have run disk with a drum master cylinder though and had no problems