Larry_g,
My new compressor has a 5 hp motor, a 60 gallon tank and is rated at 15.5 CFM @ 90 PSI.
My new blaster (AllSource VacBlast Siphon Abrasive Blaster — 125-Lb. Capacity, 28 Gallon, Model# 41700) suggests 15 CFM @ 90 PSI, but is said to work at 11 CFM @ 90 PSI.
Thanks,
Bill