There are so many airframe/engine/prop combinations. Further, in amateur built, no two are the same as in type-certificated aircraft. Therefore, the only way to know for sure for YOUR airplane is to go and test it. Then enter the data into your POH.
O-360-A1F6 (parallel valve) 180HP
Precision F.I. with AP purge valve
Vinyl Wrapped Exterior
Grand Rapids EFIS
Located in western Canada