Whipple Superchargers Camaro (2016+) 10-rib crank pulleys to vary boost output. Base Whipple LT1 kits come equipped with the 7.0" diameter crank pulley. The OD crank pulley features black hard coat anodizing, machined of billet 6061 T6 with lightweight pockets to lower mass.
Note: To calculate supercharger speed (crank pulley diameter / SC pulley diameter) = Overdrive ratio. Overdrive ratio x engine RPM = SC speed.