The circular rings on your master look just like my master in my ‘52 1/2 ton. That would have a copper gasket compressed to make the seal. Not sure that would be pipe threads as mine were not and had a special fitting attached. I can’t say that yours would be plumbed like mine but like I said before it looks just like the end of mine.

We need a ‘bolter with a ‘59 1/2 ton to chime in and give us some pictures of not only the master but how its plumbed!
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Phil
Moderator, The Engine Shop, Interiors and Project Journals

1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube
Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc Brakes
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