Supercharger pulley size question..
8" 8 rib Reichard Ultra-grip Crank pulley
4.25" 8 rib Reichard Ultra-grip supercharger pulley
F1r 5.0:1 step up
Max Impeller RPM 67200 - 69000
I would naturally assume you need to run a larger supercharger pulley to slow down the supercharger. What Crank pulley and supercharger pulley are you guys running and what boost are you seeing?
Phil

