the thickness of a paper match stick is real close.
An electronic way of setting the gap in ignition points. This is more accurate than using feeler gauges.
26-30 degree dwell or adjust points to .017 with a feeler gauge.
30 degrees on dwell or 16 thousands with feeler gauge (close)
No
Use a feeler gauge to set the point gap at .016. .016 inches using a feeler gauge, 50 degrees dwell on a dwell meter using a 4 cylinder scale plus or minus 2 degrees (8 cylinder scale set at 25 degrees plus or minus 2). If the dwell is too high the points are too far closed. A dwell meter is by far the best method, but the feeler gauge is good to get you in the ballpark with new points.
to my knowledge 1980 Chevy v8 engines didn't have ignition points, and dwell settings are for points.
20degrees
28-32 dwell or .018 gap setting
thickness of a paper matchstick or if you have a dwell meter set the dwell at 30 degrees.
28-32
28-32 degrees
30 degrees dwell