Please note that we recommend that you keep a one-way pulley installed on all Hellcat and Demon Superchargers. The one-way pulley serves as a dampner to avoid having timing issues within the heavy extruded rotors that are used in the IHI superchargers on these high performing vehicles. We recommend choosing an over-drive crank pulley over swapping out the supercharger pulley. With that said, some of you may choose to proceed with a smaller pulley installation. If so, please be aware of casting shift and possible necessary machine work that may be required. All smaller aftermarket pulleys should be inspected for clearance between the pulley and the drive snout casting housing. If you cannot insert .003 behind the pulley, machine/clearance work should be done to avoid pulley damage and possible contact.
