30 degrees dwell
Use a dwell meter to adjust the points to 30 degrees dwell.
the dwell is 29 to 31 degrees and the gap is .019.
If your speaking of ignition points, no. The last year that Chevrolet vehicles had ignition points was 1972.
.017 The dwell on a 1972 225 ci slant six is 41-46 degrees, the point gap between .017 and .023. So .020 would be your best place to start.
Should be set by dwell 28-32 degrees approx. .017
Use a dwell meter to set the gap at 30 degrees.
The spark plug gap for a 1972 333 cubic inch engine is suggested to be .030. The dwell point gap is .017.
The point gap is .017 inch / point dwell 26 - 30 / ignition timing 6 degrees BTDC / spark plug gap .035 inch / firing order 1 - 5 - 4 - 2 - 6 - 3 - 7 - 8 / distributor rotation COUNTERCLOCKWISE / according to motorcraft . com for a 1972 Ford truck with a 302 cubic inch V8 engine
BAD IGN SWITCH
According to the Chilton's Collector's Edition 1972-1979 Auto Repair Manual, the 302 is a 1972 motor and the point gap is .017. The point dwell is 26-30 degrees.
engine idle set too high or the timing is off and needs reset.