NOISEY 8 3/4 .Any advice

No i didnt take out the gears..the whole rear was bolted in..axels were slid in brakes and new plates and a new seal for the pinion..carrier [plug dropout ]was already in i didnt touch it except new seal and retorque a different yoke into it...makes noise under power and coasrting till i put in the clutch..then noise goes away till clutch is released and im under power again..tx..j