Transmission Noise

1975 Plymouth Duster
225/6 904 auto

I just did a carb rebuild on the car and reinstalled the carb today, upon start up I heard this awful squeaking noise (like a belt) so I got out and checked for the noise. It seams to be coming from behind the engine, possibly the torque converter? The noise will stay around but will go away after a while.

Has anyone experienced this before? What did you do to fix it?