Well IME the bp is generally an upward sloping line function of rpm. So to be complete, it needs to be specified at the same rpm, under the same conditions. I didn't see any rpm conditions stated.
Postal I did some experimenting with advancing the cam like that and it does indeed help low end power and spooling. It generally traps more air per stroke at low speed advanced like that, but then of course the tradeoff is less air at higher speeds. Since the engine is now trapping more air per stroke at low speed (ie the VE has gone up there) it is effectively slightly "larger" at that rpm range, and we all know what effect more cubes generally has on spoolup.
TurboTR
Postal I did some experimenting with advancing the cam like that and it does indeed help low end power and spooling. It generally traps more air per stroke at low speed advanced like that, but then of course the tradeoff is less air at higher speeds. Since the engine is now trapping more air per stroke at low speed (ie the VE has gone up there) it is effectively slightly "larger" at that rpm range, and we all know what effect more cubes generally has on spoolup.
TurboTR