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8.1S HO (420-hp)

Brief Summary

Multiport Injection (MPI)inboard models are now available with optional Digital Throttle and Shift (DTS). DTS eliminates all helm maintenance and provides silky-smooth shifts for the life of the product. DTS automatically synchronizes multiple engines, provides shift protection and provides SmartStart digital starting. DTS also features Transmission Guardian to maximize your time on the water.

Key Features

  • PCM 555 sequential fuel injection and high energy distributorless ignition system ensure reliable starts and outstanding performance, year after year
  • Industry-exclusive 3-year limited corrosion failure warranty
  • Long individual runner intake manifold design provides optimum torque and horsepower for demanding marine applications
  • Exclusive Engine Guardian protection senses potential problems and virtually eliminates the chance for engine damage due to overheating, low oil press
  • Tuned runner exhaust manifold lowers exhaust backpressure for best torque and power
  • Brass sea water pump housing improves life and better resists damage from running dry
  • Sequential fuel and spark control maximizes performance from every engine cylinder
  • Cartridge-type water-separating fuel filter helps protect fuel system and engine against damage
  • ow restriction flame arrestor for added horsepower and torque


Type of Engine
Number of Cylinders 8
Horse Power 420
Configuration V-8
Weight 1130.00lbs
Fuel Type Gasoline
Fuel Delivery Fuel Injected
Shaft Length Options
Shift Throttle Control
Displacement 496.00cu in
Steering Control
Recommended Fuel
Alternator Output 65 amp
CARB Rating
Engine Monitoring System

Captain's Report