thump or clunk in the rear end

[benoit454]

Hey guys, I have another question for all of you. Well we have an 84 c10 with a 305 ho, and th350 auto, and the sticker said 2.73 locking differential.

Well ever since we got it when you'd be going slow, like from a stop and 1s take off you'd get this thump, like somebody kicked your rear tire while you started moving. it will do it more when you are cornering, and going slow, and it seems to be doing it alot more lately. My dad said it acted like my monte carlo when I get it, because they had a mini spool in it and he said mine clunked and all when it did.

Well would it be the locking differential doing it? Bad bearing in the rear end?

Brakes maybe? I know I feel it on the passenger side but I've never ben on the driver's side to feel it, so not sure if it's side specific or not.

Rear end grease is good, right to the bottom of the fill plug.

Brakes are new, drums turned, and new wheel cylinder on my side.

Only time it does it is from a dead stop, or going very very slow and stopping, like back and forth, go and stop, stop and go. Mainly anytime you stop and start going again or are going very very slow, like maybe 1 mph or so, it does it, after that, it's fine doesn't seem to thump or vibrate or nothing.

Tires and wheels are new and balanced, front end is fine, trans. and motor mounts are good. I have no idea what it is, thinking a bearing is going down in the rear, maybe carrier or axle bearing?

Feels just like when it happens, somebody is kicking the back tires while it rolls, feel it in the whole truck, doesn't make a noise, just feel it.