Originally Posted by
Wino Ryder
Get an 8-speed campy cassette, and then get a Shimano 105 or 600 8-speed rear derailleur off ebay for cheap. Run that combination until you find a good 8-speed campy derailleur. It'll work fine.
Unless you have tried it, I don't see how it could work. The actuation ratio of a shimano D is around 1.7:1 versus 1.4:1 for old campy.... The overshifting will be considerable!