Dual master cylinder f100 brakes

[V8 Bob]

Originally Posted by big deuce

I can stick a piece of TIG wire clear to the centerline of the casting. I assume there is not residuals in mine. If any doubt, I would run 2lb residual valves, one for each wheel cylinder, correct?

Run one external 10 lb valve close to the master cylinder for each drum axle if none are internal. The 2 lb valve is strictly aftermarket and should only be used for disc axles when the master is below the floor or lower than the calipers.