Help identify disk/drum master cylinder - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Casey66 · 03-28-2018, 08:14 PM

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.

350TacoZilla · 03-28-2018, 10:11 PM

at a glance it looks mid 70's-80 C/K10

**Captainfab** · 03-28-2018, 11:54 PM

The booster is a '73-'80 and the master is likely as well.

Casey66 · 03-29-2018, 11:35 AM

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 ?

350TacoZilla · 03-29-2018, 12:47 PM

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).

Casey66 · 03-30-2018, 11:09 AM

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

03-28-2018, 08:14 PM	#1
Casey66 Registered User Join Date: Aug 2013 Location: Austin, TX Posts: 9	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. __________________ 1966 Chevy c10 SWB Stepside, SB 350.

03-28-2018, 10:11 PM	#2
350TacoZilla Registered User Join Date: Sep 2010 Location: Hancock Md Posts: 414	Re: Help identify disk/drum master cylinder at a glance it looks mid 70's-80 C/K10

03-28-2018, 11:54 PM	#3
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,251	Re: Help identify disk/drum master cylinder The booster is a '73-'80 and the master is likely as well. __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

03-29-2018, 11:35 AM	#4
Casey66 Registered User Join Date: Aug 2013 Location: Austin, TX Posts: 9	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 ? __________________ 1966 Chevy c10 SWB Stepside, SB 350.

03-29-2018, 12:47 PM	#5
350TacoZilla Registered User Join Date: Sep 2010 Location: Hancock Md Posts: 414	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).

03-30-2018, 11:09 AM	#6
Casey66 Registered User Join Date: Aug 2013 Location: Austin, TX Posts: 9	Re: Help identify disk/drum master cylinder Got a replacement for a '77, in the link above, and it bolted right up. Thanks all. __________________ 1966 Chevy c10 SWB Stepside, SB 350.



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