Perhaps these attachment files will be helpful. Its from 1962 AC catalog. Middle column is plug gap, right-most column is distributor point gap.
In finding the correct spark plugs for almost any vintage vehicle back to at least the 20s, I've always found the AutoLite website look-up to provide correct choices. You'll have to rattle around the sitel go to "application lookup", then select "spark plugs", you'll come on a set of dialog boxes for make of car, year, model, and engine. You'll get a recommended currently available AutoLite plug; I understand these recommendations were adjusted some years back to provide the best choice for current gasolines.
Attach file:
(169.80 KB) (101.59 KB)
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