1958 W100 Master Cylinder

[arcking]

Does anyone have a suggestion for a replacement master cylinder for a 1958 W100? (Preferably dual circuit)

[Ron in Indiana]

Are you planning to keep it under the floor or doing hanging pedals to mount it to the firewall? New ones are available in single circuit. I've never done a dual MC on these trucks. They did have brake boosters under the bed to help braking effort. These work very well. With a dual circuit you may get into a proportioning valve to balance front and rear braking.

[arcking]

Are you planning to keep it under the floor or doing hanging pedals to mount it to the firewall? New ones are available in single circuit. I've never done a dual MC on these trucks. They did have brake boosters under the bed to help braking effort. These work very well. With a dual circuit you may get into a proportioning valve to balance front and rear braking.

Planning on keeping it under the floor. I found someone using a master cylunder from a C30 on an M37, but I'm not sure if the same idea would work on the W100. If we decided to go with single circuit, where would we source a new MC?

[KC Kay]

I don't remember where I read it, but supposedly an early '70's Ford F350 with drum brakes, dual cylinder should bolt-up.

[arcking]

I don't remember where I read it, but supposedly an early '70's Ford F350 with drum brakes, dual cylinder should bolt-up.

Thanks for the suggestion! I'll look into it.

[Ron in Indiana]

If that doesn't pan out there is a fellow PG fan in MN who resleaves the MC with stainless steel to avoid pitting and rust.

[MrMarty51]

I lucked out,purchased a 59-D100 that has two M.C. cylinders that are rebuildable,but,I think I am going to send in My old ones and get them sleeved,just for the just in case.