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Old 03-28-2018, 08:14 PM   #1
Casey66
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Join Date: Aug 2013
Location: Austin, TX
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Help identify disk/drum master cylinder

I've been re-plumbing the brakes on my '66 shortbed step and am now needing to replace the master cylinder, it's been leaking. Problem is, one of the POs upgraded to a dual master cylinder/brake booster setup and I don't know what it's off of. I'm running disks in the front and drums in the back. The only thing I can read on it are a tag saying "0094" and another saying, i think, "223223LA" or "2232231A". Several searched turn up nothing for any of that.

If anyone can id the brake booster also, that'd be helpful too.

Any help is appreciated.



















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1966 Chevy c10 SWB Stepside, SB 350.
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Old 03-28-2018, 10:11 PM   #2
350TacoZilla
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Re: Help identify disk/drum master cylinder

at a glance it looks mid 70's-80 C/K10
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Old 03-28-2018, 11:54 PM   #3
Captainfab
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Re: Help identify disk/drum master cylinder

The booster is a '73-'80 and the master is likely as well.
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Old 03-29-2018, 11:35 AM   #4
Casey66
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Re: Help identify disk/drum master cylinder

Thanks ya'll.

OK, so if I got a replacement from that year range, with the same bore size, it should work? Something like this: https://shop.advanceautoparts.com/p/...aster+cylinder ?
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Old 03-29-2018, 12:47 PM   #5
350TacoZilla
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Re: Help identify disk/drum master cylinder

Should be the same, I kept thinking the 73&74 trucks used a different one than 75-80 but I might be wrong. I would measure your current one to make sure you get the same one as I believe there is 2 different sizes (but again I'm going off memory here).
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Old 03-30-2018, 11:09 AM   #6
Casey66
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Re: Help identify disk/drum master cylinder

Got a replacement for a '77, in the link above, and it bolted right up. Thanks all.
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