Description: The H.O. stands for high output. It also stands for big valves rectangular port heads with 118cc combustion chambers 2.19 in. intake/1.88 in. exhaust valves and 1.7:1 rocker arms 8.75:1 forged pistons and crank and four bolt mains. Perfect for classic musclecars and Street Rods this engine features such modern technological advancements as a hydraulic roller cam (.510 in. intake/.540(more)

Description: The H.O. stands for high output. It also stands for big valves rectangular port heads with 118cc combustion chambers 2.19 in. intake/1.88 in. exhaust valves and 1.7:1 rocker arms 8.75:1 forged pistons and crank and four bolt mains. Perfect for classic musclecars and Street Rods this engine features such modern technological advancements as a hydraulic roller cam (.510 in. intake/.540 in. exhaust lift with 211 degrees intake/230 degrees exhaust duration at .050 in.) a roller timing chain an 8 in. torsional damper a 14 in. flexplate a windage tray a one-piece rear main seal and a compression ratio thatll let you fill up at the pump. And with a dyno-proven 425 HP at 5250 rpm and 500 ft.-lbs. of torque at 3250 rpm this engine will keep a smile on your face for many years to come.(minimize)