206D discharge temp in the intake

All, I have a question, I am running a 206D on a BBC, we are only running it at 50% to 60% over drive depending on C.A. , My question is what should the air Temp be after the blower in the intake? new computer shows it at 66 to 67 degrees at the hit and 90 to 91.5 degrees at 1320 feet, We are only running about 10.1 gallons per minute, and 165 psi at 8000 RPM's, the out side temp was between 68 and 78 degrees, Anybody have a idea what it should be? I really want to keep the coating on the blower safe, Thanks again for the help. Butch

Thanks ITA