Delta Horse Power increase

Does anyone have the numbers for the percentage HP for the Lycoming IO360A1B6 engine that I could use. The numbers in that I are trying to use from the AFS4500 manual as a starting point seem to be a little off. Thanks for any help.

Probably not much help as I don't know the answer, but I assume your mean that the figures supplied by AFS are for the 180 hp engine and yours is the angle valve 200 hp engine, hence the data is going to be out ?