BFYZ is about what many calibrations are about in the GM database. The transmission type is undocumented. It's hard to say why this happened. Possibly the inclusion of automatic trans information s an option seemed superfluous in a car line that only offered automatic transmissions. It is clearly not a manual transmission. It clearly is a "no listing / all" calibration.
Replacement GM Cam for Fleetwood and Caprice shows part no 10088155. Same cam as 305 TPI engines.
Cam specs here:
http://www.gmtips.com/3rd-degree/dox/tips/cams/cams.htm
The 9C1 cars got a larger cam but I'd look at the exhaust for the small difference in Caddy and Caprice.