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Old 09-01-2014, 01:31 PM   #1
Big Bamboo OP
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Converting Disc Brake Rear Drive to Drum Brakes

Is it possible? I have several messed up pre-1977 drum brake rear drives and one excellent 1978 disc brake rear drive. Would it be possible to convert it to drum brakes by swapping the inside cover? The disc brake rear end has no holes for the brake shoe mounts.
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Old 09-01-2014, 11:33 PM   #2
Wirespokes
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I've looked at them and wondered the same thing. Some of the early disc FDs had the holes machined for drum use, but the brake actuator arm opening had a plastic cover. Those would be easy I'm guessing.

The ones without the holes would need some machine work - more than just the cover since the actuator needs to penetrate the outer housing.
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Old 09-01-2014, 11:54 PM   #3
Big Bamboo OP
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Yes, the '78 main housing does have the hole, but the inner cover has only blank bosses. It appears the outer housing is the same for all years. Time to learn how to shim rear drives..!
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Old 09-02-2014, 11:09 PM   #4
Wirespokes
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No need to shim if all you do is drill and tap a hole.

I've heard these drives are a real pain to shim.
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