Mike, On 6-cylinder Plymouths, lug bolts were used at all 4 corners. On V8 Plymouths, obviously starting in '55, the front wheels used lug nuts. According to the '55-'56 service manual, the thread is the same for either: 1/2"-20. I don't know when the change to all-nuts changed, but yes, what you've seen on your cars is original - assuming your cars have the V8. Jason Rogers '55 Belvedere 6-cyl. Warner Robins, GA |
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