When I floor, I hear and feel a loud, strong clanking sound. Maybe driveshaft

[G-863559]

Whenever I try to do a burnout, I feel like as if the driveshaft comes out of place. Or a strong bang beneath the floorboard. I think some bushing broke off. I don’t know. I

 

[melsg5]

Whenever I try to do a burnout, I feel like as if the driveshaft comes out of place. Or a strong bang beneath the floorboard. I think some bushing broke off. I don’t know. I

Put the car on a lift and find the source of the noise. Maybe a broken motor mount allowing exhaust system to hit something.

 

[92 Sunbird LE]

What year Firebird? 82 and up could be the torque arm mount also.......

Doug in P.R.