I think that all the original stuff, except maybe fasteners for some mechanical parts on the driveline were cad plated. Zinc plating is the current substitute for cadmium.
I have not used black oxide on anything exposed.


Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.