Since we're talking distributors, the 216 I just pulled has what seems to be a ground wire to the block (circled in pic). Is that good or bad or is it even needed? Engine always ran great so I've never removed it.
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distributor ground to engine block

Matthew 6:33

1952 Chevy 1/2-ton 3100
Late '55 235/SM420/torque tube 3.55
Dalton Highway survivor (using original 216)
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