Ok this may seem kinda stupid but here we go,

I am using a 68 mustang drum brake MS to replace the old single circuit job in my 64 F100.

Is the front port for the front brakes, or is it the rear port like the 70s-80s disc drum setups?

 

the front port goes to the rear brake and the back port goes to the front brakes

drum/drum should have the same size ports on the master cyl

disc/drum will have a larger port for the front brakes.

 

Two different size ports.

Hmm?

Thanks Bill, at least now I can start running lines.

 

Ports may or may not be differing sizes. the fill resivor should be the same for drum drum. Disc are small rear large front to accomidate the additional caliper volume.

Outlet ports were large and small to prohibit over paid assembley monkeys the chance to mess up.

Garbz

 

...unless it is raining really hard, and then it is any port in a storm...

 

I love it. If only the UAW seen it this way.