Small Block Ford Serpentine Conversion Kit - Driver's Side Lower Radiator Hose Alternator & Power Steering Applications (No A/C) The Beast 8 Track Serpentine Pulley Kits feature 8 ribbed serpentine pulleys for 30 percent more grip than traditional 6 rib pulleys. This pulley kit has been CNC machined in the USA from a solid 6061-T6 Aircraft quality Alumimum to ensure that it is balanced and as strong as possible. We then hand polish each part so that it really makes your engine stand out from the crowd.