727 Converter Question

A 360 converter needs the weight on it since it's externally balanced. If you look at the face of the converter there will be four mounting brackets for the flexplate bolts. That's all there will be attached to it since the weight has been removed. Also the stall speed may be stamped into the converter, or a sticker on it (which usually falls off). If not there is no way of being sure of the stall speed until it's installed.

I wasn't sure if you wanted to verify the weight is actually missing, or the stall speed.