I have a 1994 firebird 5-speed 3.4l I just rebuilt the motor put back in motor runs fine but know its hard to shift the gears.Cluth pedal doesnt seem to be as stiff as it used to be either almost like theres nothing their .The fluid looks okay.What could've happened.

 

air in the clutch lines?

 

what do i need to do to get the air out.