.020 or 30 degrees of dwell if you have a meter
0.019in
30 degrees dwell
.017.
A 79 shouldn't have points to gap. It should be an HEI distributor.
0.019" (New) points- 0.016 (Used) points.
If you are using the original points distributor, the gap would be .035".
0.019
30 degrees dwell
30 degrees dwell
I am running the exact same combination with 0.035" gap. Good results.
When set properly, the gap would probably be about .018". The correct way to set the points would be to hook up a dwell meter and adjust the points for 30 degrees dwell.
.019" with new points or .017 with used points. The dwell should be 32 to 34.