My experience is that they are over-square, long on top relative to the seat tube, but seem to have quick geometry, probably based on the head tube angle/fork rake. Almost all have a pretty narrow gap from the seat tube to the rear wheel.

80's Italian frames were pretty nice, but had generally temporary decals, and the paint, for some reason, didn't like sweat. I've seen many that look like dookie now, but ride great. I've upgraded a few for myself and others, and that's never been hard to do.