Hard knocking sound comming from rear end???

[BoostJunkie94]

Yesterday I noticed for some strange reason just out of no where in low gear ( In 1st ) this hard knocking and scraping sound came from my rear end.. I was puzzeld.. i do have a welded rear end and it does make noise when turning but thats normal.. this was different.

 

[rockyracoon]

I would pull the cover and make sure the center pin isn't coming coming out of the carrier. Did you locktite the retaining bolt ?

 

[90lxwhite]

this hard knocking and scraping sound came from my rear end.. Thats what she said

 

[5point0stang88]

Check your drive shaft/bolts

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-1988 Mustang GT hatch
Trick Flow Specialties Stage 1 cam, Frpp headers, o/r h pipe, Flowmaster 40s, gt40p heads/intake, Crane beehive springs, hardened pushrods, underdrive pulleys, no smog, electric fan, 70maf sensor, bbk 70mm throttle body, Hotchkins castor camber plates, Hotchkins suspension, welded subframe connectors, dual friction clutch, 3.73 gears Positraction, freezing cold AC

 

[bentley429isBAC]

Roll the car without the engine running see if its coming from one side or the other. Its probably a wheel bearing