tranny problem giving me a bad feeling

[gabet40]

i dropped in my newly rebuilt turbo 350 and 350 engine about 4 months ago. then spent the last 4 months putting the engine together and finally fired it up about a week ago.
i ran the engine long enough to flush out my cooling system and tune my injection at idle. next step was to tune the idle in drive. i had about 4 qts of tranny fluid already in the torque converter so i put another 8 qts in through the filler. started her up and put it in drive, nothing happened. no shift at all.
the only thing i noticed was the front driveshaft start spinning, then gradually stop when i put it back in nuetral. then if i paused for a second in reverse before continuing to park, there was a whining noise. i smell trouble.
any suggestions? questions about where i might have went wrong?
please dont tell me the trannys no good and have to pull it out