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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: Mar 2003 Posts: 93 'Bolter | | 'Bolter Joined: Mar 2003 Posts: 93 | Hello folks....I plan a front disc upgrade on '47 1/2ton, using a non booster dual master cyclinder. I'd like to go to the local NAPA and buy the M/C and proportioning valve. Will any mid '70's chevy pickup cylinder work ? Any specific year etc ? Do you think it will have a built in residual valve ? Thanks for all your thoughts and comments. | | | | | Joined: Apr 2005 Posts: 2,097 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 2,097 | 72 up GM vehicles had disc brakes with a dual MC and a booster. Typically they also used a proportioning valve and had a built in residual valve. Disc brakes require more pedal pressure hence a booster would be the preferred set up. How a disc brake MC designed for use with a booster would perform without the booster would be speculative. Some aftermarket suppliers offer a kit with brackets, MC, & proportioning valve for use without a booster. I don't know what parts they use or how well they work.
Fred
1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine
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