At a bare minimum, an engine builder will use a dynamometer to ensure critical mating surfaces are sealed properly, that rings are seated, that a camshaft is broken in and that an engine makes an appropriate power output.
At I.C.E. Autmotive, the Superflow 901 dyno is used as a tool to develop and refine engines via spark and fuel curve optimisation and the establishment of a baseline appropriate to its application, before an engine is installed in the car.
Interesting though they are, dyno figures are of negligible value in isolation. Though standardised correction factors lend them some comparability between dynos, the value at I.C.E. Automotive comes as much from the reference data contained within the extensive historic database as well as the interpretation of data generated, and its value and applicability to specific applications.