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Brake booster |
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Amcguy1970 
AMC Apprentice 
Joined: May/05/2019 Location: Ogdensburg Status: Offline Points: 92 |
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 Topic: Brake boosterPosted: Jun/21/2019 at 3:57pm |
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my brake booster on my jav took a crap,I am having alot of trouble finding one,is there any other booster that will work,on a 1970 jav with drum brakes?
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White70JavelinSST
Supporter of TheAMCForum 
Joined: Aug/08/2012 Location: Minnesota Status: Offline Points: 4867 |
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Posted: Jun/21/2019 at 4:33pm |
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70 Javelin SST, second owner, purchased 1972
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Amcguy1970
AMC Apprentice
Joined: May/05/2019 Location: Ogdensburg Status: Offline Points: 92 |
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Posted: Jun/21/2019 at 6:08pm |
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I tried galvins,he has a listing for a brake booster for a 1970 with a v6,drum brakes,I have a v8,drum brakes,not to sound to dumb,but will the v6 version work?I cant imagine a difference
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mmaher94087
AMC Addicted 
Joined: Apr/01/2008 Location: Arizona Status: Offline Points: 1688 |
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Posted: Jun/21/2019 at 6:44pm |
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V-6 has to be a typo. No V-6 in '70. V-8 or inline only.
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Mike
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Amcguy1970
AMC Apprentice
Joined: May/05/2019 Location: Ogdensburg Status: Offline Points: 92 |
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Posted: Jun/22/2019 at 6:27am |
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I'm sorry,that's what I ment,6 cylinder,but I'm wondering if they are still the same booster
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White70JavelinSST
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Joined: Aug/08/2012 Location: Minnesota Status: Offline Points: 4867 |
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Posted: Jun/22/2019 at 8:27am |
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I'm venturing a guess that an inline 6 engine in a 70 Javelin has the same booster as a V8 70 Javelin. The APD listing doesn't differentiate between the I6 and V8 for the booster application
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70 Javelin SST, second owner, purchased 1972
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THE CHOP SHOP
AMC Fan 
Joined: Oct/11/2018 Location: Fl Status: Offline Points: 5 |
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Posted: Jun/22/2019 at 8:42am |
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I had a cardone on back order with Summit for 4 months then saw on here someone say eBay had them. I was skeptical but ordered on Sunday had by Friday.
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green70AMX
AMC Nut
Joined: Sep/21/2016 Location: Suffolk, Va Status: Offline Points: 326 |
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Posted: Jun/22/2019 at 8:46am |
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Sent mine off and had it rebuilt took about 3 weeks
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green70AMX
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Perrybones
AMC Nut
Joined: Oct/05/2008 Location: Freehold NJ Status: Offline Points: 274 |
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Posted: Jun/23/2019 at 3:06pm |
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I was at a car show and noticed a mid 70s Corvette with an aftermarket booster that looked identical to the AMC booster. I went to Corvette Central and looked at the part. Turns out there are "bendix" boosters that are the same except for the input pushrod shaft and the master cylinder mounting surface, only AMC seems to have the pushrod with the "eyebolt" end that attaches to the pedal linkage assembly. The Master cylinder mounting surface on some of the boosters have a "recess", the AMC is flat faced. I have noticed that one of my power boosters is much more sensitive on one of my cars. The booster was from my stock parts. Quite possibly this might be a drum brake power booster, if there is such a thing, since it is a bit touchy and locks up fast with the disc brakes .
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Perry 70 Javelin SST 390, 69 AMX 343, 73 AMX 360, 67 Rebel SST Conv and 92 Corvette Conv. (modern muscle to keep wife happy).
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White70JavelinSST
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Joined: Aug/08/2012 Location: Minnesota Status: Offline Points: 4867 |
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Posted: Jun/24/2019 at 2:05pm |
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An AMC drum brake booster is a single diaphragm unit. The disc brake booster is a dual diaphragm. Hence two different listings at APD for boosters. I converted the White70 front drum brakes to disc and purchased a dual diaphragm booster to replace the single diaphragm drum booster.
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70 Javelin SST, second owner, purchased 1972
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