Issues with a rebuilt 360

you limit the mechanical advance inside the distributor so initial plus mechanical don't exceed the total you want. mechanical advance is what you can feel if you take the cap off and turn the rotor arm, it has some spring resistance when turning by hand. it's done when the motor is running by centrifugal force with internal weights pushing out against the spring pressure that you felt turning the rotor arm.
so basically you have to limit how far the rotor can turn.
neil.