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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Apr 2009 Posts: 187 'Bolter | | 'Bolter Joined: Apr 2009 Posts: 187 | I have a 50 Chev halfton, having the original single reservoir master cylinder. I understand that some people upgrade to a dual reservoir style from a later style truck (67-70). Has anyone done this according to the article in Tech Tips. Or any ideas what model master cyl for 4 drum brakes could be used. thanks
I would rather be late 10 minutes in this life than 10 minutes early for the next
The reason my lady and I have been together so long is because of the kids. Neither one of us wanted sole custody
| | | | | Joined: Sep 2007 Posts: 393 'Bolter | | 'Bolter Joined: Sep 2007 Posts: 393 | I have a master from a full size Chev car from 1966 or 67 (If I remember correctly - it was from the first year that cars had dual master cylinders) My truck is drum and drum. It's a '47 'second series'. I think the tech tip is for Cletis' '56 and is consistent with the method for the AD's but the bracket for the AD's is different.
It's a small world, but I wouldn't want to paint it.
| | | | | Joined: Apr 2009 Posts: 187 'Bolter | | 'Bolter Joined: Apr 2009 Posts: 187 | I appreciate the response, did you have to make up your own adapter bracket so that it mounts to the frame underneath the cab, or did you use something sold over the counter?
I would rather be late 10 minutes in this life than 10 minutes early for the next
The reason my lady and I have been together so long is because of the kids. Neither one of us wanted sole custody
| | | | | Joined: Sep 2007 Posts: 393 'Bolter | | 'Bolter Joined: Sep 2007 Posts: 393 |
It's a small world, but I wouldn't want to paint it.
| | | | | Joined: Jan 2009 Posts: 1,644 Shop Shark | | Shop Shark Joined: Jan 2009 Posts: 1,644 | I did the change on my 52-3100 bought the adapter from clasic and used a master from a 67 c-10 pickup it also had drum front and rear. The big plus in buying the adapter is you get all the bolts and nuts and the adjustment rod to install the master the right way.
One thing I did if you look on the clutch arm coming out of the frame it has a rubber bumper on it so the clutch arm does not bang against the cab . When you change to a new style master it does not have the rod fixed to the master ,so I ordered a rubber bumper for a clutch arm and fitted it to the brake arm so that the arm doesn't bang against the cab.
Pete
Last edited by Pete52; 12/28/2011 2:14 PM.
| | | | | Joined: Apr 2011 Posts: 23 New Guy | | New Guy Joined: Apr 2011 Posts: 23 | | | | | | Joined: Apr 2010 Posts: 146 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2010 Posts: 146 | Thanks for the tip Pete! I'll be sure to order one while I'm working on the brakes. | | | | | Joined: Aug 2011 Posts: 149 Wrench Fetcher | | Wrench Fetcher Joined: Aug 2011 Posts: 149 | i used a m/c from a70 chev pickup,mounted on fire wall.used swing pedal,mounting bracket,changed all of bkake lines 3/16.total cost less than 65.00.junk yards are full of good parts.... | | | | | Joined: Apr 2010 Posts: 146 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2010 Posts: 146 | When updating to a new style master cylinder, how did you adapt to the 1/4" original size brake lines? I looked at a M.C. today that had a 5/16" outlet and a 9/16" outlet. The store didn't have any adapters that went down to 1/4" in just one fitting. | | | | | Joined: Sep 2006 Posts: 2,393 Shop Shark | | Shop Shark Joined: Sep 2006 Posts: 2,393 | I got my line adapters from my local NAPA store. I took my MC with me and they went thru their parts box of adapters to find the right ones. Also, if you haven't bought your new MC bracket yet, many of us on Stovebolt have bought from Ghostrider, a member here. Just do a search using his member name to contact him.
Drew
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