Here's an old dirt-track trick from the point-ignition days. Take the spring off a discarded set of points, and fit it inside the spring on the new points you're installing. It stiffens the spring, and adds about 500 rpm or more before the points start floating. Use a SMALL quantity of disk brake wheel bearing grease on the cam/rubbing block area of the distributor, or you'll wear out the rubbing block in a hurry. I've also got a racetrack trick to get an extra 1,000 RPM or more from an HEI distributor, if anybody's interested in going really fast with that setup.
Jerry
