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Used Mercury MIE 340 Inboard Gasoline Engine. Nice and Clean Condition, Drop in Ready, 610 hours, CCW Rotation. Ready to Install !!
Mercury MIE 340 Inboard Gasoline Engine 340-HP
$2,657.00
Used Mercury MIE 340 Inboard Gasoline Engine. Nice and Clean Condition, Drop in Ready, 610 hours, CCW Rotation. Ready to Install !!
Mercury MIE 340 7.4L (V8) 340 HP Inboard Gasoline Engine
The MerCruiser 340 MIE is a 7.4-liter (454 cubic inch) inboard marine V8 engine based on a General Motors block, produced roughly from 1981 to 1987. It features 340 horsepower, a 4-barrel carburetor setup, and inline or V-drive transmission compatibility designed for heavy-duty marine propulsion.
SPECIFICATION
Displacement: 7.4 Liters (454 CID)
Horsepower: 340 hp
Cylinder Configuration: V8
Base Engine Block: General Motors (GM) big-block V8
Aspiration: Naturally aspirated
Fuel System: 4-barrel marine carburetor
Cooling: Thermostat-controlled seawater pump assembly and exhaust manifolds with risers
Ignition: Thunderbolt IV electronic ignition
Oil capacity: 7 US qt (6.6 L)
KEY FEATURES
High-Torque V8 Design: Built to push heavier medium-to-large sport cruiser hulls with straight-inboard or V-drive setups.
Robust Raw-Water or Closed Cooling: Utilized heavy-duty marine cooling configurations with accessible thermostat housings and brass/bronze peripheral fittings.
Mechanical/Manifold Choke Carburetion: Designed around Rochester 4-barrel spread-bore setups engineered for high-volume secondary air-flow under heavy throttle loads.
Serviceable Vintage Architecture: Readily compatible with standard legacy GM Gen Mark IV big-block parts, simplifying manifold, starter, and fuel pump replacements.
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