[Keithc8]

With the Victor Jr heads you will find that the engine will run best at about 32 to 34 degrees total timing. This may fall back to 6 to 12 degrees initial. This will depend on how your mechanical advance is set up inside the distributor as the other guys said. You can also change the springs so that your timing comes in at 2500 to 3500rpms, the stock setting on the distributor from MSD will not total out till about 5000rpms. Good luck Keith