72 360 first start question

My stock 83 318 was at 18 initial on ported. I would say 15-20 in your case & that'd likely require shortening the mech adv amount but you'd be OK with that amt for now for your basic troubleshooting to get it running. FBO sells a plate for $25 to your door that lets you easily take care of limiting the advance. What idle speed are you able to get it down to now? I'm hoping low enough so we are on ported. So the cam is correct and it was a vac leak & they are a real pain to deal with & you may or may not still need to pull the intake but we're getting there!