Chevy no run

[Rad2004]

1984 Chevy K10 4x4, 350 punched .060 ID Number matches from year range 1969-1979

I just put a rebuild motor in my chevy but i am having a problem either starting it or keeping it running. Heres where im at now.
-Moving distributor, sometimes starts and runs for 5 seconds, without moving distributor, sometimes won't run.
-Sealed oil pressure switch with tephlon tape
-Replaced pickup coil in distributor
-Played with fuel mixture and idle adjustor on carb. (carb is Holley 650 double pump, electric choke)
-Tested ignition coil, test passed
-Checked for any possible vaccum leaks, none detected

I know im getting fuel, air, and spark, but sometimes it will just crank and crank, maybe hitting spark once. Could it be possible that the ignition control module or condenser are weak? Does anyone know how to test these components? Im at my wits end and really need help cause i don't know what i could be missing. Anyone who can help me asap with more suggestions please email me and truelove_cne_sjl@yahoo.com, snow is coming and i need to get this truck out of my parents garage. Thanks

[LT1MAN]

why dont you ask the chevy guys?