4.3L Alpha 4V 225HP
$7,886.00
Don't just repower--power up! The world famous 357 Alpha will breathe new life into your runabout, sport boat, or pontoon boat when replacing a 4.3L, 5.0L, or 5.7L engine.
| Power | 275 HP (205 kW) |
| Full Throttle Range | 4400-4800 RPM |
| Displacement | 357 CID (5.8L) |
| Engine Type | Remanufactured GM V8 Marine Iron Block & Gen+ Heads |
| Bore & Stroke | 4.040" x 3.480" (103mm x 88mm) |
| Compression Ratio | 9.4:1 with Hypereutectic Pistons |
| Rocker Arm Ratio | 1.5:1 |
| Fuel Requirement | 87 Octane (R+M)/2 |
| Fuel System | Weber 750 cfm 4V Electric Choke Carburetor & Mechanical Fuel Pump |
| Induction System | Dual Plane Aluminum Intake Manifold with Bronze Inserts |
| Ignition System | Thunderbolt V with Knock Control |
| Charging System | 65 Amp / 917 Watt Alternator |
| Water Drain System | Multi-Point Drain - Hand Removable Blue Drain Plugs |
| Exhaust System | Iron Manifold with Wet-Joint Exhaust Elbow |
| Cooling System | Thermostatically Controlled Raw Water - 160 F* |
| Accessory Drive System | Serpentine Belt |
| Lubrication System | High Flow Oil Pump |
| Reccomended Engine Oil | SAE 25-40 NMMA Certified FC-W Synthetic Blend |
| Audio Warning System | Oil Pressure, Coolant Temperature, Drive Lube |
| Alpha Ratios | 1.47:1 / High Altitude 1:81:1 |
| Dimensions (LxWxH) | 32" x 30" x 22" (814mm x 740mm x 559mm) |
| Engine Weight (lbs./kg) | 871 / 395 |
| Optional Fresh Water Cooling | Dealer Installed Kit |
| Boat Harness Type | 10-pin |
*Requires addition of Seawater pump kit if used with Gen I Alpha Drive
