PrevNext Procharger 14 lbs of boost302 supercharged engine 471 RWHPProcharger 14 lbs of boost471 RWHP 489 RWTQ3.40 12 rib pulley 0.69 shaft hole3.40 12 rib pulley 0.69 shaft hole4.00 12 rib pulley 0.89 shaft holeClog pulley 3.85 0.89 shaft diam67 mustang I6 distCarb I6