Rotor Phasing

BillGrissom said
That might be OK if the vacuum advance will move it towards the tower as it comes on. You can connect a Mighty-Mite hand vac to easily test that. Note that vacuum advance moves the phasing, whereas the centrifugal advance doesn't since that angular shift occurs below the reluctor wheel pickup.

Sounds like the 91 Magnum engines still used a distributor for spark timing vs later ones which use a crank pickup and computer. But I am surprised they still used a mechanical pod for vacuum advance since my 1982 Aries had that in the "spark computer". Perhaps you are using a 1970's Mopar distributor.

This is a Mopar Crate carbureted 360 Magnum, the 300hp version.
The position of the rotor in the picture is with vacuum advance.
In the picture that's the engine idling with 18 degrees of initial timing plus 12 degrees from vacuum advance:
I have the vacuum advance routed to manifold vacuum source to get more advance at idle.
So that's 18+12 equals 30 degrees at idle.
So when the vacuum advance goes away the rotor should then move closer to the cap terminal and when the vacuum advance is on it pulls the rotor ccw from the cap terminal. Like how it's pictured right now.