1970 c10 hates me

[imaguywithemail]

so I've been driving my 70 c10 (the black one I did the chassis swap on) to work for about 3 days now. Got her up and running alright. Well, until about 2 hours ago when i went to drive her down to kragen's to test the alternator. Got about 3 blocks from my house when the rear wheels locked up on me. Kind of feel lucky i got her off the road all the way. I thougt it was the transmission first, but it's shifting through all the gears fine. I'm going to disconnect the driveshaft tomorrow, and then i'll know for sure if it's the rearend or the transmission. Luckily I bought both at the local junkyard I'm friends with the owners at, so it's really a matter of me going down tomorrow and telling them the parts they sold me were toast. Not too worried tho. I think the previous owner of the diff welded it so it'd be a locker so there's a good chance that's what happened. Well just thought I'd vent. Just another problem I've run into on this thing. It's SO gonna be worth it when I'm done. Gnight.