On a 737-800 gives 8% climb according to maintenance manual.
Just the sort of thing an engineer needs to know, but not the pilot.
Over the past 30 years the FCOM's have been diluted extensively. There have been many legitimate questions asked by myself, in the bath, or by students in the class-rooom. No answer in pilots' FCOM, but there they were in the non-accessible maintenance manual. Go figure.