Seven Marine LogoSeven Marine LogoSeven Marine Logo


the Seven 577s

The luxury outboard for customers that choose the ultimate power experience. Engineered to maximize mid-range torque for efficient and reliable cruising, the 577s propels the largest outboard boats further than before.


Fourth Generation Raw Water Pump

The new 577s features an improved raw water pump that provides a consistent feed of cooling water across all critical engine systems.  This pump maximizes flow to ensure cooling in even the hottest conditions.



The new 577s style creates a realm of infinite possibilities.  Presence is intensified by its power, personalize your 577s and transform your soul.



Engineered Acoustics

Reawaken your senses with the smooth refined rumble of the 577s idle. Push the throttles forward and feel the refined harmony of the supercharged V8 fuel your restless path to extraordinary adventure.

577s features

577s Tech Specs

Prop Shaft Power

577 hp @ 5700 RPM (430kW)

Engine Construction

All aluminum

Engine Configuration

Horizontal 90 degree V8


376ci (6162cc)

Bore x Stroke

4.065 x 3.622 in (103.25 x 92mm)

Compression Ratio


Induction System

1.9L TVS supercharged and intercooled

Cooling System

Closed loop

Fuel System

Multi-Port Injection (MPI)

Maximum Speed

6000 RPM


Integrated hydraulic power steering

Lubrication System

Wet sump

Oil Capacity

8 qt


8 coil digital ignition


180A (120A @ 1000 RPM, 12V)


Power trim and tilt


Electronically controlled 90 ZF wet disc clutch


Water cooled stainless headers with dual overboard exhaust

Shaft Length

577s: 20” & 25" to 39” (1” increments 25" to 39")


CW, CCW, & Contra-rotating

Trim and Tilt Range

-5 degrees to 67 degrees

Shallow Water Trim Range

15 degrees

Recommended Fuel

89 octane minimum

Gear Ratio BASE

577s: 1.75:1, 1.61:1, 1.47:1

Gear Ratio CR

577CRs: 2.33:1, 2.14:1, 1.96:1

Gear Ratio GT

577GTs: 1.47:1, 1.61:1

Dry Weight with 20" leg

1094 lb (497Kg)

All specifications are subject to change.

Top Categories

Top Tags