351W Timing Chain set up?

[canadabronco]

My Edelbrock timing chain has slots to set the chain up for advanced/O/retarded timing. Does my 75 351W have advanced timing? I set it up advanced buy before I start her up I want to make sure you guys agree. :-U

 

[Desert Thrasher]

A lot of times, ford set them up a little retarded for lower emissions, Setting it up advanced should give yo a little more power.