JK AMW 505 8-Speed Conversion Package

Americas Most Wanted SKU: JKU-505-8HP75-PKG
Regular price


Valid in US only


  • 6.4L/392 cubic-inch displacement

  • 505 horsepower / 475 lb-ft of torque

  • Cast iron block with 4-bolt main caps

  • Aluminum cylinder heads / Forged crankshaft

  • Powdered metal rods with floating pins and Hypereutectic aluminum pistons

  • 10.9:1 compression ratio allows for pump gas use

  • 4.090-inch bore and 3.724-inch stroke

  • Hydraulic roller camshaft

  • Eight-speed heavy-duty Mopar® automatic with fluid supply line kit, 6061 billet heater delete and 185° F thermostat