thanks, that is good info. in my case:
426ci, 12.5:1 comp, ported Edelbrock performer heads with 2.08 intake valves, 1.6 ratio rockers, SB HYD RLR CAM 238/242 -110o LSA. run on 91 octane pump gas. 1150RPM idle. driven at 6500 ft above sea level.
Theses are the settings I have now, plus 5 degrees vacuum advance:
View attachment 1715727678
