8.8 Rearend making noises. July 25, 2018, 03:24:44 PM So I've put an 87 Thunderbird TC 8.8 in my 86 TC, went for a ride and it makes bad noises. All I did inside it was replace the clutchpacks. There is a lot of slack when turning one of the wheels, you can turn one almost an inch before anything inside moves or the other wheel moves. Also, when turning the wheels and then quickly stopping the carrier keeps spinning for a fraction of a second while the wheel is stopped. I have no idea what it could be? Anything could help, thanks.