I do have a tach hooked up. I hooked up an old SunTach I had laying around just for the break-in. I have the green wire to the tach going to the green tack output wire from the distributor. The red wire to the tach is hooked to battery power, and the black wire is grounded. I didn't hook up the white tach wire because I don't need the light for now.

I had thought the tach could be the problem, so I disconnected the green wire. I haven't tried cranking it since then.