Mercury Mercruiser Engines

Marine Tow Sports Inboard Scorpion 350 - 330 hp

The Scorpion 350 engines are here with a vengeance. Sporting a Tunnel Ram intake manifold and a 90-mm throttle body, no other tow sports engine can deliver the sting of a Scorpion. Scorpions are not all brawn – equipped with the ECM 555 Controlled Area Network they make the entire vessel an intelligent system. The SmartCraft® system serves as an I/O hub for digital engine and environmental information and enable features like Engine Guardian to protect your valuable investment.

   Mercury Mercruiser Marine Engines Tow Sports Inboard Scorpion 350 - 330 hp


  • ECM 555 fuel and ignition system, along with platinum-tipped spark plugs, ensures reliable starts and outstanding performance, year after year
  • Dry-joint exhaust eliminates the chance for water to enter engine through leaky gaskets
  • Water-separating fuel filter helps protect fuel system and engine against damage
  • Extra high alternator output at idle to keep batteries going with large amps and water pumps
  • Proven General Motors® cast-iron block V-8 power for years of reliable operation
  • EDP-coated exhaust elbows resist temperature and corrosion for long life
  • Brass seawater pump housing improves life and better resists damage from running dry
  • No fuel return lines for added safety
  • An all-iron exhaust system will not corrode, leak or melt like aluminum exhaust can


  • Nothing beats the power delivery of a Tunnel Ram
  • 90-mm throttle body for instant throttle response
  • HVS ignition with knock control maximizes power and protects against low-quality fuels
  • Low-restriction anodized flame arrestor for added horsepower and torque
  • A variety of available high-quality hydraulic transmissions allow boat manufacturers to precisely match hull characteristics and boat weight to optimize performance
  • Custom hot spark calibration for maximum pulling torque


  • Three-year/300-hour maintenance interval on many periodic service items saves time and money
  • Color-coded service points make checking fluid levels simple and straightforward
  • Operates on easy-to-find, less-expensive 87-octane fuel
  • No tools required to drain water from engine with blue drain plugs
  • Special ball joint throttle and shift linkage for easy maintenance and custom adjustments made simple
  • Optional remote oil filter and oil drain hose, makes V-drive oil changes easier than a car
  • Optional air-actuated water drain, drains lake water from the block in seconds


  • Multiport fuel injection provides easy starts, cold or hot, and automatically adjusts for changes in temperature, weather or altitude for terrific performance in any environment
  • Helm-mounted Audio Warning System works with Engine Guardian to monitor and protect against engine or transmission damage if monitored temperatures or pressures vary from normal range
  • Large 65-amp alternator provides plenty of power for popular onboard electronics, even at low rpm
  • MPI engines are designed to display engine information on your choice of analog or SmartCraft® digitally driven gauges and displays

Power 330 hp (243 kW)
Full Throttle Range 4800 - 5200 RPM
Displacement 350 CID (5.7L)
Engine Type V8
SmartCraft® Yes
Engine Control System ECM 555 with SmartCraft CAN Capability
Fuel Injection System Multi-Point Electronic Fuel Injection
Water Drain System Optional
Velvet Drive 71C 1.0:1
ZF 45 C 1.0:1
Velvet Drive 72C 1.5:1
Walter V-Drive w/71C 1.46:1
Walter V-Drive w/45C 1.46:1
Weight w/ Velvet Drive (lbs./kg) 821/373

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Bullock Marine offers new & used powerboats as well as performance boat accessories: skater, fountain, eliminator, Mercruiser Mercury Marine (competition - racers & performance propellers, Zero Effort Controls™, K-Plane™ high performance trim tabs, Mercury Racing Trim Indicators™, high performance engines, competition drive, etc.) cigarette boat, welcraft, scarab, donzi boats, catamaran raceboat, high speed twin hull, etc. Bullock Marine is an authorized dealer for Douglas Marine Skater Powerboat, Regy Fountain powerboat & sport boat, Eliminator powerboat & sport boat, and Mercury Mercruiser marine engines, Drive & accessories. Mercury Mercruiser HP 1075 SCi 1075 HP marine engines racing boats Mercury Marine HP 575 SCi 575 HP Sterndrives performance boat Mercruiser HP 525 EFI 525 HP race boat engine for sale powerboats Mercury Mercruiser HP 500 EFI 500 HP stern drives power boat Mercury Marine Scorpion 377 377 HP marine engines high performance boats Mercruiser 496 MAG High Output 425 HP Sterndrives sport boat Mercury Mercruiser 496 MAG 375 HP race boat engine for sale powerboat Mercury Marine MX 6.2 MPI Horizon 320 HP stern drives performance boats Mercruiser MX 6.2 MPI 320 HP marine engines power boats Mercury Mercruiser 350 MAG MPI Horizon 300 HP Sterndrives engines Mercury Marine 350 MAG MPI 300 HP race boat engine for sale mercruiser Mercury Drive Dry-Sump Six drive racing mercruiser powerboats mercury Bravo One XR Sport Master sport boat drives sport boat V SSM drive mercury race power boats III-A SSM drives mercury mercruiser racing boats Bravo One XR drive powerboat Bravo X Diesel mercruiser drives sport boats Bravo XR mercury drive for sale power boats Bravo X drives mercruiser boats Bravo mercury drive sales pleasure Alpha drive mercruiser boat

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