No, those are welded on to balance the drum, unless you are planning to balance the whole wheel assembly on the car, and leave it there without rotating the rim any, I'd not do that! The only other choice would be to take the drum off, and have it balanced by grinding off some of the opposite side cooling fins. Chevy uses a flatter weight, not those round ones that stick up, so it's not much of an issue there. I'll bet you can balance it by grinding off just a partial fin on the side opposite the weights, but you'd need a machine to check it. Of course, there's nothing to say that weights haven't fallen off already over the years on the drums, so it could be out of balance anyway. LOL. hard to say. but for the most part, you'd be better off leaving it the way it is. or you could remove the weights, have large flat washers of the same weight welded to the drum in the same general area, and that would be close enough, probably. But I think removing them outright will cause you some serious balancing issues that you would regret. Talk to an experienced brake shop, maybe they have some "professional" ideas as to how to overcome this. Not a Meineke type chain store, but a REAL mechanic that does brakes and will take time to do stuff that's not " in the book" or "on the computer". Good luck! Jerry '78 Gremlin GT