Vacuum advance issue

Cam1399 said
I have a mild 360 in a 1974 duster with vacuum advance issues. Trying to see if I’m doing something wrong or if it’s the vacuum advance. Idle timing is at 11 and wide open is 34 with the vacuum advance plugged. I have edelbrock carb. The one I’m hooking it to is the passenger side. As soon as I hit the throttle the timing goes crazy and starts pinging. Thanks guys

Remember, if you changed your carb gasket, and used an open gasket, your idle vacuum port will be open to vacuum at idle if you have an open gasket. You want ported vacuum, not manifold vacuum. Let me know if you don't understand, I can send a picture of the different carb gasket.