Help! I have no speedometer

well....there are only so many things that it could be.

possible that the cable bound up in the sheet and snapped.

could be the speedo gauge head took a crap.

possible its not clipped on all the way at the back of the cluster or the shaft is goobered.

on the trans end....it could be where the cable meets the speedo housing or the speedo gear could have got chewed up.

I find it hard to believe some of the things I mentioned since it worked up until your recent swap....so you will probably find it to be something simple like its not clipped in all the way or something...OR you bound your cable up and the line snapped.