Dave, I usually tear down the pump and check it before I install it. It's amazing what I've found in brandy new pumps over the years /ubbthreads/images/graemlins/banghead.gif
I pack the pump when I re-assemble it, using a little redline engine assembly lube (moly fortified! /ubbthreads/images/graemlins/smile.gif ), mixed with a little engine oil. I've always kind of thought vaseline wasn't the best product for that application. It's just my opinion, I know a lot of people use vaseline in their pumps, and I used to... but since I changed over to the redline/oil slurry, I haven't had a single issue of any kind.
I also install a filter, fill the crankcase with oil and pre-oil the engine on the stand. I use a cordless screwdriver or low power cordless drill right before I put the t-belt on, to insure the filter, all the galleys/lifters and the turbo are full.
Many have had success packing the pump, installing the engine, and then just disconnecting the cas in situ. A little cranking the engine over on the starter (with the spark plugs out to increase cranking speed and reduce bearing loading) usually get's the oil light off fairly quickly. I think c.r did his this way, and it runs just fine. In fact, I usually do this as well, but I always feel better knowing it's already full of oil.
Good luck with your build! /ubbthreads/images/graemlins/smile.gif
+1 on the drill method, best insurance period. Leave the valve cover off and you can watch it reach up there. Only do this if your going to start your engine right after though. Otherwise you could end up dry starting your bearings, otherwise you want assembly lube on everything. It doesn't seep out.
If you can't do it this way, just use enough assembly lube to coat everything. It will last about 2 minutes without oil and the engine running. So just start up the engine and watch for oil. Oil pressure will build fast, within seconds. If not, then something is wrong. If you "pack the pump" then all that crap will have to work it's way through the engine and could either clog or delay oil from getting into all the spots. Oil pumps are meant to pump oil, not grease. Chris Anderson of AAP in Atlanta once told me this.