master cylinder size

I bought a Wilwood hanging pedal assembly. I now need to buy the master cylinders for the front and rear brakes. The front brakes are disk (GM calipers from Riley Automotive) and operate off of one master cylinder. The rear brakes are Ford 11" drums on a Ford 9" rearend. Does anybody have any experience with choosing a bore size for each of these master cylinders? They seem to start at .75" dia and go up to 1.125" dia. bore. Any suggestions on what size(s) I should purchase?

 

I went with a 15/16" bore for my manual disc/drum brakes. Works great.

 

What is the pedal assembly, two or three master cyl?

 

Three master cylinders, I have a clutch. For the clutch I have purchased a .75" dia. master cylinder. Any experience with sizing master cylinders for brakes?

 

I stick to what they came with. 1" was used by GM for manual disc/drum. 1 1/8 for power. How do you proportion the two separate systems? Balance bar?

 

4 builds, all 4 disc ,drum, used 15/16 bore from torino , early mustang, if your going manual, not power. got at napa

 

Your best bet is to call Wilwood. 805-388-1188

 

Gotta agree with wingman, call Wilwood with your specifics. They suggested 7/8 front, 1 inch rear for my setup, which is 3100# car, Mustang 2 discs up front with GM calipers, OEM drums in the rear on a 8.75 Mopar. I am using the balance bar as well with the floor pedal.

This thread has some discussion:
http://www.jalopyjournal.com/forum/...highlight=master+cylinder+bore+size+disc+drum

 

Had a similar question but with drums front and back. Buying the Wilwood cylinder from Speedway so emailed the tech line and got the answers I needed.
Wingman is right, Wilwood will know.