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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!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Nov 2013 Posts: 33 New Guy | | New Guy Joined: Nov 2013 Posts: 33 | I plan to switch from the original single compartment master cylinder to a Dual compartment Master Cylinder for safety reasons. Does anyone have any information on where I can purchase the proportioning valve and lines? The Dual Master came with the vehicle. I want to do the front brakes separate from the rear just in case there is a line or wheel cylinder leak. don't want to go crashing headlong into anything! Heard there was something in Speedway, but haven't looked at it yet. | | | | | Joined: Nov 2010 Posts: 339 Shop Shark | | Shop Shark Joined: Nov 2010 Posts: 339 | Jim, you don't need a proportional value unless you are going to do disc brakes. With a dual master cylinder, you have one hole for the front and the other for the back. Yes, Speedway has what you need. root | | | | | Joined: Mar 2010 Posts: 10,271 Renaissance Man | | Renaissance Man Joined: Mar 2010 Posts: 10,271 | I plan to switch from the original single compartment master cylinder to a Dual compartment Master Cylinder for safety reasons. Does anyone have any information on where I can purchase the proportioning valve and lines? The Dual Master came with the vehicle. I want to do the front brakes separate from the rear just in case there is a line or wheel cylinder leak. don't want to go crashing headlong into anything! Heard there was something in Speedway, but haven't looked at it yet. Where's the fun in that? I thought that was what the parking brake was for. 
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission
| | | | | Joined: Dec 2000 Posts: 3,399 Gas Pumper | | Gas Pumper Joined: Dec 2000 Posts: 3,399 | If you take a look in my bolt bucket (below) you will see dual MC, disc brakes and the new square hole you need to cut out to fill the MC. CPP (Classic Performance Products) is the vendor but I went thru Brothers Truck Parts. Their catalog has everything you need. I am sure there are others, but that was my experience.
The nice thing about dual MC is you are totally separating the front from the back. I just felt that while I was at it, a person could take that opportunity to add the disc brake kit. | | |
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