Adding Disc Brakes to 40 Convertible Advice Sought

Robert Bonnaffon · 2026-10-23T16:48:29Z

Love driving my 40, but crazy traffic argues for going with disc brakes. Would welcome advice from others who have made this change on any tips, problems to lookout for and recommendations on sources for parts kit. My usual sources, Filling Station, Chevs of 40s don't have kits for my vehicle available. Thanks for any advice and guidance. Will also change to dual reservoir master cylinder and wonder about any suggestions on adding brake fluid given original filling through floor pan.

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Robert Bonnaffon

(@robert-bonnaffon)

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Topic starter November 15, 2026 12:06 pm

An update re ABS brakes. After reading a fair amount on retrofitting ABS technology older drum brakes, it appears this is much more complex than I had

anticipated with issues regarding attaching sensors to drums and uneven results of calibration due to brakes heating up. A disappointment as it could be a strong improvement. Sounds like it is not entirely impossible but very difficult to get it right and not practical. My thinking at this point is to stick to improved linings/ARC grinding and modern master cylinder.

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