357 Scorpion Bravo

The ideal repower for your small sport boat to replace a 350 Mag MPI or 7.4L MPI

  • Sounds as good as it looks
  • CMI headers standard
  • CMI header tips not included
  • Unique repower for small sport boats with Bling!
  • Only available with stainless steel marine headers
  • 3 header tips must be custom purchased

Available when purchased through any Mercury/MerCruiser authorized dealer



Power 325 HP (242 kW)
Full Throttle Range 4800-5200 RPM
Displacement 357 CID (5.8L)
Engine Type Remanufactured GM V8 Marine Iron Block & Gen+ Heads - 062 Casting
Bore & Stroke 4.040" x 3.480" (102mm X 88mm)
Compression Ratio 9.4:1 with Hypereutetic Pistons
Rocker Arm Ratio 1.6:1 Full Roller
Fuel Requirement 87 (R+M)/2
Fuel System Gen II Cool Fuel
Induction System Scorpion Tunnel Ram - aluminum with bronze inserts & 90mm TBU
Ignition System ECM 555 with Smart Craft
Charging System 65 Amp / 917 Watt Alternator
Water Drain System Multi-Point Drain - Hand Removable Blue Drain Plugs
Exhaust System 316 SS CMI Marine Headers 3.5" outletand ceramic coating
Cooling System Thermostatically Controlled Raw Water - 160F
Accessory Drive System Serpentine belt
Lubrication System High Flow Oil Pump and Copper Oil Cooper
Recommended Engine Oil SAE 25-40 NMMA Certified FC-W Synthetic Blend
Audio Warning System Oil Pressure, Coolant Temperature
Bravo One Ratios 1.50:1, 1.65:1
Bravo Three Ratios 2.00:1, 2.20:1
Dimensions (LxWxH) 32" x 30" x 20" (814mm x 740mm x 508mm)
Engine Weight (lbs./kg) 932 / 423
Optional Fresh Water Cooling No FWC available

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