ProSea Airboat LZ495 Engine
Stepping on up to what we refer to as our stage 2 ProSea package, The LZS495 engine offers a modest amount of horsepower gains over our entry level engine measuring in at 495 acutal horsepower. Our ProSea LZS495 out performs small blocks with ease while providing better gallons per hour for your marine vessel.
Each Southern Performance System’s ProSea Airboat Engine Package includes 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.
Our ProSea engines have become a popular choice within the airboat industry.
Airboat LZS495 Includes:
New LS376/480 Crate Engine:
LS3 Intake - LS3 Drive-by-Wire Throttle Body - LS3 Injectors - Fuel Rail (Deadhead) - LS3 Performance Heads - LS3 Hot Cam Camshaft - LS3 Hydraulic Roller Lifters - Beehive Valve Springs - Hypereutectic Pistons - Powder Metal Rods - LS3 Crankshaft - Corvette Factory Ignition Coils - Ignition Coil Harnesses - Spark Plugs - Spark Plug Wires - Starter - Air Filter and 4" Tube
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
495 Horse Power
*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: | LS-Series Gen IV V8 |
| Block: | Cast Aluminum with 6-bolt, cross-bolted main caps |
| Displacement (cubic inches): | 376ci (6.2L) |
| Bore x Stroke (inches): | 4.065 x 3.622 |
| Crankshaft: | GM Nodular Iron |
| Rods: | GM Powdered Metal |
| Pistons: | GM Hypereutectic Aluminum |
| Camshaft | LS Hot Cam - Hydraulic Roller |
| Valve Lift: | .525 Intake .525 Exhaust |
| Camshaft Duration (@.050"): | 219 Deg Intake 228 Deg Exhaust |
| Cylinder Heads: | Aluminum LS3/L92-style port, as-cast w/68cc chambers |
| Compression Ratio: | 10.7:1 |
| Valve Size (inches): | 2.165 Intake - Hollow Stem 1.590 Exhaust - Sodium Filled |
| Valve Springs | Beehive Springs |
| Push Rods: | GM Factory |
| Rocker Arm Ratio: | 1.7:1 |
| Oil Pump: | GM Factory |
| Reluctor Wheel: | 58 tooth |
| Throttle Body: | 92mm - Drive by Wire |
| Injector Size: | EV6 42# @58psi |
| Main Bearings: | GM Factory |
| Rod Bearings: | Gm Factory |
| Cam Bearings: | GM Factory |
| Head Gaskets: | GM Factory |
| Head Bolts: | GM Factory |
| Main Bolts: | Gm Factory |
| Rod Bolts: | GM Factory |
| Pedal | Livorsi Electronic Pedal |
| Serpentine Belt Drive: | GM Factory Brackets - Alternator Only Style |
