March Performance Chevy Big Block Serpentine Drive Kits

March Performance Chevy big block serpentine drive kits simply bolt onto the front of any big block Chevy heads. The bracket kits come complete with stainless steel tensioning rods and chromoly rod ends for high performance operation. Matching serpentine pulleys are precision CNC-machined from 6061-T6 aluminum and then clear powdercoated to eliminate polishing in those hard-to-reach places. These pulleys will not fracture like common cast pulleys, since they have high tensile strength for much longer wear. The high-wear areas on these pulleys are hard coated. Their street rod ratio increases water flow and fan speed, which helps at critical low-speed driving. These performance pulleys create approximately 12 hp, depending on the accessories driven. Show Less