I would put the next colder plug in it based on the heat transfer onto the top thread only, it should be between 2 and 3 full threads is what I have been told a long time ago and retard the timing down to 34 to 36 degrees total BTDC. up
Have you verified that the zero mark on the dampener is exactly dead on at Top dead center?
If not, you should: scope wrench:

Last edited by Cab_Burge; 03/09/22 12:10 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)