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Click on image for the lowdown. 
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| | | Forums66 Topics128,080 Posts1,056,063 Members48,433 | | Most Online14,466 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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Looks like its a single resevouir, pretty small cap with a single bolt holding it down.
Is this also a single piston setup? If so do I have any options on a master cylinder replacement with dual piston and would there be an option with vacuum assist?
Thanks
| | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy Rambos Ride, yes that should be a single system master, [rectangular cap], as to the booster, that is usually mounted after the master cylinder on that vintage of truck. They're called remote boosters, Hydrovac is one name for them. I personally would not bother to install a dual master cylinder, a properly setup single system will work [and have] for many years, hope that helps. | | | | | Joined: Jun 2008 Posts: 37 Apprentice | | Apprentice Joined: Jun 2008 Posts: 37 | Hy Rambos Ride, yes that should be a single system master, [rectangular cap], as to the booster, that is usually mounted after the master cylinder on that vintage of truck. They're called remote boosters, Hydrovac is one name for them. I personally would not bother to install a dual master cylinder, a properly setup single system will work [and have] for many years, hope that helps. Thanks - are the master cylinders available rebuilt or at least a kit? Too late to call NAPA tonight! | | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy Rambos Ride, the Napa part number for that master cylinder is UP34403 $77.49, that is the cheapest master cylinder I have seen in a long time, hope that helps. | | |
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