Okay, so we re-checked the oil pump spindle, sure enough, it was off. Pulled the pump, reset the spindle, hooked everything back up, and she still won't fire up, though we have quite the backfire going on now. I tried to advance the distributor but she only turns clockwise so far. So, let's recap...
Cam set in proper relation to TDC (compression)#1 piston.
Yes, cam is dead-on.
Distributor/oil pump drive spindle installed in the classic '11:28' position.
This I'm curious about. When we put it in, it wasn't quite what I'd call "11:28", maybe more like 11:25 or so. Can this be off by a tooth? Should it be lining up exactly with the bolt holes in the mount?
Distributor installed with ROTOR, pointing to the #1 spark plug wire on top of cap.
This is good.
All wires going to proper spark plugs. Don't assume!
Also good.
Valve lash set, so valves will open AND close.
also good.
Intake manifold and carb mounted tightly, no vacuum leaks.
This I'm assuming is good, it's kind of hard to check without the engine running, isn't it? Also, is this problem alone enough to cause a no-start situation?
Any more ideas, guys? We'd love to get her fired up tonight.