At one time Sears use to sell a kit to do this, it had 4 or 5 rings if different dia to go over Dist Cam and held both sets open. Still have mine along with my P & G Valve gapper.
Quote:
Originally Posted by Alan Roehrich
I use the corner of a business card to block off each set of points individually, and set the other set to 28 degrees dwell.
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