ProSea Airboat LXR680 Engine
Southern Performance System’s Performance Airboat Engine Packages include all of the engine essentials for your dream airboat. Performance Airboat packages include engine, Starter, Custom-built airboat engine wire harness, electronic accelerator pedal, mass air-flow meter, engine control module, water pump, balancer, and alternator. All harnesses are user friendly with instructions. This package is great for airboat builders that want big block naturally-aspriated power without the extra weight.
Each of our ProSea packages comes with a LS Series engine, serpentine system setup for airboats (Alternator, Water Pump, Balancer), Custom Engine Management Harness, Custom ECMs with programming, and other misc items.
Our ProSea engines have become a popular choice within the airboat industry.
Airboat LSX427 Includes:
New LSX427 Custom Built Engine:
Airboat Serpentine Kit:
Alternator - Tensioner - Balancer - Water Pump
Airboat Oil Pan Kit:
6 or 8.5 quart Oil Pan - Oil Pickup Tube - Deflector/Windage Shield - Engine Oil - Oil Filter
GM E38 Based Engine Management System:
Main Engine Harness - Diagnostic Plug w/Check Engine Light - Fan Relay - Fuel Pump Relay and Wire - Fuse Block for Circuit Protection - Tachometer Hookup - ECM with Custom Programming - Airboat Electronic Pedal Assembly - Mass Air Flow Sensor - Oxygen Sensors
Optional Holley Engine Management System:
Main Engine Harness - Terminator ECU (Programmed) - Wide Band Oxygen Sensor - Intake Air Temp Sensor Diagnostic Lights - Tachometer Hookup
MarineMods Gateway:
Includes MarineMod.us CAN-2CAN Gateway protocol translator for powertrain compenents. This gateway translates programming languages from GMLAN and Holley EFI data to NEMA2k marine gauges.
Standard Sensors:
Map Sensor - Crank Sensor - Cam Sensor - Oil Pressure Sensor - Knock Sensors - Water Temperature Sensor
620 Horse Power
**Note on Custom Programming: Our engine packages include files that have been tuned, in a controlled environment, either on an engine dyno or chassis dyno. Due to variations in air intake systems, water temperature, air temperature, exhaust system, and fuel quality, it is recommended to have you finished vehicle fine tuned on a chassis dyno.
*Price Subject to Change.
**Images displayed on this page are general representations and delivered items may feature changes based on availability.
Engine Specs
| Engine Type: | LSX-Series GEN IV |
| Block: | LSX Cast Iron w/6-bolt, cross-bolted main caps |
| Displacement (cubic inches): | 427ci (7.0L) |
| Bore x Stroke (inches): | 4.125 x 4.000 |
| Crankshaft: | Callies Forged Compstar |
| Rods: | Callies Forged H-Beam |
| Pistons: | RaceTec 4.125/-6.00cc |
| Camshaft | CompCams Custom Grind - Hydraulic - 3-bolt style |
| Cylinder Heads: | CNC LSX-LS3 Rectangular Port - 68cc Chambers & 6-bolt Attachment |
| Compression Ratio: | 10.5:1 |
| Valve Size (inches): | Rev Valves 1 piece SS 2.165 intake 1 piece Inconal 1.600 exhaust |
| Valve Springs | Dual Spring |
| Push Rods: | Comp Cams Hi-tech .105 Wall |
| Rocker Arm Ratio: | 1.7:1 Roller Tip |
| Oil Pump: | Melling High Pressure/High Volume |
| Reluctor Wheel: | 58 tooth |
| Throttle Body: | 92mm - Drive by Wire |
| Injector Size: | EV6 60# @58psi |
| Main Bearings: | Clevite |
| Rod Bearings: | Clevite |
| Cam Bearings: | Durabond |
| Head Gaskets: | Cometic??? |
| Head Bolts: | ARP Head Studs |
| Main Bolts: | ARP Main Studs |
| Rod Bolts: | ARP 2000 Rod Bolts |
| Pedal | Livorsi Electronic Airboat Pedal |
| Serpentine Belt Drive: | GM Factory Brackets - Alternator Only Style |
