Stcok Timing?

Hey Guys...
Quick question... What would be a good baseline for timing my engine at idle. It's a TPI 383 with a mild cam, nothing too crazy. I''ve been hearing mixed numbers, so I just wanted t see what anyone here has or even knows whats th eoem setting to be? The engine runs pretty good, but sometimes stalls out when coming to a stop. It doesnt do it with the timing plug disconected, so it leads me to believes something is off.... Thanks in advance for all your help!