8.1s HO Horizon 420 HP

"Do it Once - Do it Right !"

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420 Horsepower MPI 8.1 Litre V8 Fresh Water Cooled

  • PCM 555 sequential fuel injection and high energy distributorless ignition system ensure reliable starts and outstanding performance, year after year.
  • Exclusive Engine Guardian protection senses potential problems and virtually eliminates the chance for engine damage due to overheating, low oil pressure, or low transmission oil.
  • Proven GM cast iron big block V8 for years of reliable operation.
  • 316L Stainless Steel dry-joint exhaust elbows better resist high temperature and corrosion and improve exhaust flow for more power.
  • Brass sea water pump housing improves life and better resists damage from running dry.
  • Tuned runner exhaust manifold lowers exhaust back pressure for best torque and power.
  • Sequential Multi-Port Fuel Injection provides easy starts, cold or hot, and automatically adjusts for changes in temperature, weather, or altitude for terrific performance in any environment.
  • High Energy distributorless ignition with knock control maximizes power & protects against low quality fuels.
  • High-mount starter and aluminum oil pan are protected from salt water for years of reliable operation.
  • Dual dipsticks for easy service access.
  • Operates on easy to find, 87 octane fuel.
  • Long-life coolant requires replacement every 5 years.

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