489 Chevy Marine Long Block
Our 489 Big Block Marine Engine is far different than a basic Chevy crate engine. The 454 based stroker engine is designed with a host of upgraded internals specific to marine use to provide maximum torque from 2,500 to 5,550 RPM, right where you need it on a boat. Get on plane quicker in the water or blow over dry land easier on your airboat.
Piston Oilers - Optional
Spring Oilers - Optional
Payment Plans Available!
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Fuel Type
Max RPM
Idle Quality
Best Use
| Horsepower: | 550 |
|---|---|
| Torque: | 575 |
| Bore/Stroke: | 4.280 x 4.250 |
| Compression: | 10:1 |
| Fuel Type: | 91+ AKI (USA) / 95-98 RON |
| Block: | OEM 454, Gen V/VI 9.8" Short Deck |
| Crankshaft: | 4340 Forged |
| Rods: | H-Beam, 4340 Forged Steel |
| Pistons: | 4032 Forged Aluminum 18cc dome |
| Bearings: | Clevite H-Series Coated |
| Camshaft: | Hydraulic Roller |
|---|---|
| Heads: | Aluminum, As-Cast Oval Port |
| Valves: | Ferrea Super Alloy Exhaust, 6000 Series Intake |
| Rocker Arms: | Billet Aluminum, Full Roller, Girdled |
| Intake: | Not Included |
| Oil Pan: | Marine |
| Valve Covers: | Polished Aluminum, Dual Breathers |
| Power Adder: | N/A |
| Fuel Delivery: | Not Included |
| Ignition: | Not Included |
Dyno Testing
Dyno testing not included in long block price. Here at Prestige Motorsports, our “Dyno Promise” means that we dyno test every engine we build to verify the quality of our work, the integrity of each component, and the reliability of every engine we construct. Then, we deliver the dyno results for your project directly to you, the customer. Hours for dyno testing will be calculated with the purchase of the fuel and ignition group per engine order.
Engines will produce +/- 2% of advertised power at the flywheel. Advertised power levels are achieved using an electric water pump and specific induction and exhaust systems. Power will vary after pulley systems are installed or if changes are made to the induction or exhaust system (e.g. camshaft, cylinder head, compression, intake manifold, exhaust headers, air filters, etc.). Chassis dyno results measure power at the wheels and only calculate flywheel horsepower. Wheel horsepower is affected by a variety of vehicle-specific criteria including driveline design, body and chassis flex, air intake location, etc. Therefore, calculating flywheel horsepower from wheel horsepower is not an accurate representation of actual flywheel horsepower.
Warranty
This Prestige Motorsports engine is built to order and comes with a 3-year, unlimited miles warranty. Our warranty covers the base engine from intake manifold to oil pan.
Upgrades & Add-ons
Ready to upgrade your project? Add a kit from each area below to convert your base engine into a turn-key package. Kits come installed and dyno tested with your engine. Please note that not all of the options listed below are available for every engine. Contact us for more details.
Fuel Supply
Don’t waste time and frustration on that old carburetor. Fuel your engine with a dyno tested system for proven performance.
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Quick Fuel Marine 1050
Starting at $1,265.95 -
Quick Fuel Marine 850
Starting at $686.95 -
Holley Gen 3 Ultra Dominator
Starting at $1,231.95 -
Quick Fuel SS-830
Starting at $637.95 -
Quick Fuel Q-1050
Starting at $949.95 -
Holley Multi-Point EFI
Contact for Options -
Borla Stack Injection
Contact for Options
Ignition System
You'll need a top-notch ignition system for trouble-free performance. Let us customize one for you with everything needed to keep the spark alive.
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MSD Pro Billet System
Starting at $859.95
Pulley Kits & Accessories
Pulleys drive vital components. Let us install a high-quality kit that keeps your engine running and provides max clearance for cooling systems. Available in multiple finishes!
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Alternator Only, Black
Starting at $1,224.95 -
Alternator Only, Polished
Starting at $1,224.95 -
Alternator Only
Starting at $750.00 -
Ultra Drive Black: Alt, PS, AC
Starting at $2,300.00 -
Ultra Drive Polished: Alt, PS, AC
Starting at $2,300.00
