Screw a top dead center stop in cylinder number one and carefully check top dead center to make sure your damper didn't spin to double-check your timing issue. Lots of out of Country dampers are spinning.

1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time