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master cylinder interchange

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Rogue401 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rogue401 Quote  Post ReplyReply Direct Link To This Post Topic: master cylinder interchange
    Posted: Aug/25/2014 at 9:31am
Saw this list of AMC master cylinders on Hemmings Newletter.


The first line of the article reads "AMC used many parts from other manufacturers throughout the 1940s, '50s and '60s. That is why you often find components from many other auto and truck makes also used in AMC applications.What's funny is that there are very few other make interchanges, mostly in early 50-early 60s.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Midnight Rambler Quote  Post ReplyReply Direct Link To This Post Posted: Aug/25/2014 at 11:36am
You need a subscription to view it.

After what I just went through with my American, I'd love to see it.

'66 American 440 Convertible 290/M-40/AMC 20 3.15/PS/PB
'04 Jeep Wrangler X Rocky Mountain Edition 4.0 5sp
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rogue401 Quote  Post ReplyReply Direct Link To This Post Posted: Aug/25/2014 at 11:57am
Oops, It doesn't ask me so I forgot. I only subscribe to the electronic edition of Muscle Machines for, I think, $7/year and it's well worth it. You get all the newsletters a couple of times a week and there usually something I'm interested in.

here's the list. Probably stepping on somebodies toes...

  • 1941-'54 Nash Ambassador, 1941 Willys MA, 1946-'51 Jeep CJ2A and CJ3A
  • 1941-'55 Nash Statesman, 1950-'57 International 110, 120, 130 and 140 series pickups
  • 1950-'55 Rambler, 1955-'57 Nash Ambassador and Statesman, 1958-'60 Rambler American, 1942-'64 Jeep DJ, station wagons and pickups, 1957-'58 Packard, 1951-'54 Henry J/Allstate, 1953-'54 Hudson Jet, 1947-'60 Studebaker (except creep option), 1956-'63 Studebaker Hawk, 1949-'62 Studebaker trucks, except four-wheel-drive
  • 1951-'56 Packard and 1955-'57 Hudson Hornet
  • 1956-'57 Rambler six-cylinder, 1958-'59 Rambler, except American 1957-'59 Rebel
  • 1952-'55 Jeepster
  • 1962-'63 FJ series, 1963-'65 pickups (exc. dual rear wheels) 1960-'61 Rambler, 1955-'66 CJ5, CJ6 and DJ3 with a dual brake system, with two-stud-mount master cylinder and without power brakes
  • 1955-'66 Jeep CJ5, CJ6 and J-series pickups with power brakes
  • 1960 Rambler, Rebel, Ambassador, 1959-'60 Cadillac, 1959 Oldsmobile, 1955-'61 Chevrolet, Pontiac with four-stud-mount master cylinder, without power brakes
  • 1960 Ambassador, 1961 American, Classic, 1960-'61 Rebel, 1959-'60 Cadillac, 1959 Oldsmobile, 1955-'61 Chevrolet, Pontiac with Delco-Moraine master cylinder, with power brakes
  • 1962 Rambler, American and Rebel, without power brakes
  • 1962 Rambler, American and Rebel, with power brakes
  • 1963 American, Rambler, Classic, without power brakes
  • 1963 Ambassador, American, Rambler, Classic with power brakes
  • 1964-'73 Ambassador, 1964-'69 American, 1968-'73 AMX, 1964-'66 Classic, 1970-'73 Gremlin, Hornet, 1968-'73 Javelin, 1965-'67 Marlin, 1971-'73 Matador, 1964-'69 Rambler (Exc. some 1966-'67), 1964-'70 Rebel, 1966-'69 Rogue, 1967-'72 Jeep J- series, exc. DRW, 1973-'76 Jeep CJ series with or without power drum brakes, also 1973-'75 Jeep CJ series with non-power disc brakes
  • 1966-'67 American, Rambler, without power brakes with 17⁄8-inch bore master cylinder
  • 1967-'71 Jeep CJ and DJ-5 and 6 series 1-inch bore master cylinder, with dual drum brake system
  • All pre-1968 models and 1969-'70 Rebel with power disc brakes (metal strap-type cap retainer)
  • 1968-'74 all models and 1975-'76 Hornet and Gremlin with power disc brakes (wire bail-type cap retainer)
  • 1972-'76 Matador, 1975-'76 Pacer, 1969-'74 Javelin, 1973-'76 Hornet, Gremlin, 1971-'74 Ambassador with non-power disc brakes.
  • 1974-'76 1969 Rogue, 1971-'76 Matador, 1971-'74 Ambassador with power disc brakes
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 401MATCOUPE Quote  Post ReplyReply Direct Link To This Post Posted: Aug/25/2014 at 12:16pm
This doesn't tell me much and has a lot of discrepancies on the last couple of lines.  I would think a public published list like this would be a liability, if someone just swaps parts around when someone says "interchangable".....no value added in my book.
Ross K. Peterson
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68X,GoPac,390,4sp,52A
69X,GoPac,390,4sp,64A
70X,GoPac,390,4sp,87A,8
70X,GoPac,390,4sp,BBO,8
70 Jav SST,390,AT,BSO
74MatX,401,AT,Prototype
74MatX,401,AT
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rogue401 Quote  Post ReplyReply Direct Link To This Post Posted: Aug/25/2014 at 1:09pm
My main point was that it was another typical article that says AMC used all these other parts when the list actually shows the opposite. No, it doesn't really help much.

A while back when somebody asked about other parts interchanges, I sarcastically mentioned starting a list of all the parts we could use, like spark plugs, distributor caps, some steering boxes, points, oil, wiper blades, headlight bulbs, etc.

I always get in trouble because my wife says she can't tell after 36 when I'm trying to be funny
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Midnight Rambler Quote  Post ReplyReply Direct Link To This Post Posted: Aug/25/2014 at 3:04pm
Quote 1966-'67 American, Rambler, without power brakes with 17⁄8-inch bore master cylinder


I thought the article would list what they interchange with.  So basically there is no option for the American with the odd Wagner MC unless you use the Bendix and swap the brakelines or if you go through pushrod heck like I did.

'66 American 440 Convertible 290/M-40/AMC 20 3.15/PS/PB
'04 Jeep Wrangler X Rocky Mountain Edition 4.0 5sp
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rogue401 Quote  Post ReplyReply Direct Link To This Post Posted: Aug/25/2014 at 3:32pm
My first go around with the drum brakes was finding a NOS Wagner thru Master Power Brakes. He also said they could have sleeved it even with the step bore. But the original owner has sold business and I don't think they do rebuilding anymore. When I went with front discs, I originally went with a rebuilt 76 Hornet manual disc MC and did have to reroute the brake lines and make a pushrod. Brake lines had to be changed to incorporate a combination valve anyway.

I still have the Wagner and have wondered how the two bore sizes would work with the rear discs?


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Post Options Post Options   Thanks (0) Thanks(0)   Quote farna Quote  Post ReplyReply Direct Link To This Post Posted: Aug/27/2014 at 10:21am
Some of those AMC applications WILL interchange with other manufacturers. A lot of different Ford master cylinders will interchange with AMC. The catch is they sometimes have the outlets on the opposite side, and you have to watch out for bore size. Bendix made a lot of MCs for both AMC and Ford (does Ford own a stake in Bendix?), and other makes and even types of equipment. There are sometimes other subtle differences, so you shouldn't use a MC even if it bolts up without at least knowing the original specs and specs for the swapped unit. You may want a different bore size, especially if changing brakes.

I can tell you that AMC used a 1" bore MC for nearly all models. 75-76 all disc brake cars used a 1-1/8" MC, 77-78 just Matador used that one. 71-74 manual disc MCs (Kelsey-Hayes calipers) used a 1-1/16" bore. 67 Americans (and some 66 models) used a Wagner step-bore MC that had 1" for the front brakes and 7/8" for the rear, but I've replaced those with straight 1" bore MCs with no issues. Those are the only exceptions to the 1" bore.

Left or right outlets, and the size of the tubing nuts varies by model. In general up to about 74 outlets are right side (passenger side for US), left side after. Up to about 1966 the tube nut is a different size for front and rear brake lines to prevent mixing. After that both are standard sizes. I said ABOUT 1966 -- I'm not sure of the year these changed, may have been earlier.

For a good primer on brakes see the tech section at www.mpbrakes.com. There are articles there geared mainly for street rodders explaining the pressure differences with bore sizes, pedal ratios, and just about anything else you need to know to alter or build a safe brake system. If you don't have a good understanding of how hydraulic brakes work you're better off sticking to stock components.
Frank Swygert
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Wrambler Quote  Post ReplyReply Direct Link To This Post Posted: Aug/27/2014 at 11:23am
Originally posted by Rogue401 Rogue401 wrote:

My main point was that it was another typical article that says AMC used all these other parts when the list actually shows the opposite. No, it doesn't really help much.

A while back when somebody asked about other parts interchanges, I sarcastically mentioned starting a list of all the parts we could use, like spark plugs, distributor caps, some steering boxes, points, oil, wiper blades, headlight bulbs, etc.

I always get in trouble because my wife says she can't tell after 36 when I'm trying to be funny


I scared the crap out of one of my oldest sons friends. he thought I hated him!
I was just messing with his head, I guess it worked. For 2 years! He finally figured it out. I didn't really think I was doing anything special...

I've also scared one aunt, both my kids at various times, my wife, etc;...oops

I'm just going to be known as a grumpy old bastard  Wink
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 62ramblin Quote  Post ReplyReply Direct Link To This Post Posted: Sep/01/2014 at 12:15pm
I need a MC for 62 rambler any ideas out there
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