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  •  » Master Cylinder for Granada Swap with Power Brakes

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    1/15/2026 7:57 PM  #1

    Jieve
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    Registered: 5/29/2014
    Posts: 112

    Master Cylinder for Granada Swap with Power Brakes

    Started with manual 4 wheel drums in my 1967 Coupe, and decades ago picked up all the wheel stuff (Granada spindles, calipers, etc.) from a guy who had been using them in his '67 Mustang. However, never picked up the master cylinder or prop valve.
    A year or so later I grabbed a master cylinder and prop valve out of what I think was a mid 70's Maverick with manual front discs from a junkyard. Here is a pic of what I've got. 
    So my questions: 
    1) if using the '68 midland booster with the '68 pedal but with Granada disc brake swap, what master cylinder should I be using (from which vehicle)?
    2) What proportional valve should I be using (from which vehicle)?
    3) If rebuilt, are either of the parts I picked up usable for the Mustang (or worth using)?
    Thanks!

    Last edited by Jieve (1/15/2026 7:57 PM)

     

    1/16/2026 12:08 AM  #2

    MS
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    From: Canyon Lake, Texas
    Registered: 1/24/2013
    Posts: 12,702

    Re: Master Cylinder for Granada Swap with Power Brakes

    That is not a disc brake master cylinder
    You should use the 67-70 Mustang power disc master cylinder which has a 1” bore.
    The distribution block in your pic is a drum brake one.  Totally different from what you need.  Either a Granada or a 70 Mustang combination valve is what you need.  Nothing in your picture is from a disc brake car.

    Money you enjoy wasting is NOT wasted money... unless your wife finds out.
     

    1/16/2026 12:29 AM  #3

    Jieve
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    Registered: 5/29/2014
    Posts: 112

    Re: Master Cylinder for Granada Swap with Power Brakes

    Thanks for that response, I'll scrap them then, must have thought at the time those parts were usable but then again it was 25 years ago. 
    For the prop valve, what range of model years on the Granada is applicable?

    Last edited by Jieve (1/16/2026 12:34 AM)

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    1/16/2026 7:22 AM  #4

    John Ha
    Senior 24-7 FYI Addict

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    From: Mitchell, SD
    Registered: 4/02/2013
    Posts: 1,028

    Re: Master Cylinder for Granada Swap with Power Brakes

    I would recommend an aftermarket adjustable proportioning valve.  They are widely available from numerous sources (Summit, O'Reilly's, National Parts Depot, etc.)

    Founding Member of the Perpetually Bewildered Society
     

    1/19/2026 1:23 PM  #5

    MS
    Forum Originator

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    From: Canyon Lake, Texas
    Registered: 1/24/2013
    Posts: 12,702

    Re: Master Cylinder for Granada Swap with Power Brakes

    Jieve wrote:

    Thanks for that response, I'll scrap them then, must have thought at the time those parts were usable but then again it was 25 years ago. 
    For the prop valve, what range of model years on the Granada is applicable?

    75-80 Granada had discs/drum. They 70 Mustang one is available aftermarket, but I quit selling them years ago as most leaked internally.  Maybe they have improved by now.
    Adjustable is fine, but takes effort to get it set right.

    Money you enjoy wasting is NOT wasted money... unless your wife finds out.
     

     

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