Show Financing?: Yes

383 Chevy Marine Long Block

Starting at $8,499

Prestige Motorsports has developed a line of airboat engines that will leave the competition stuck on dry land. Designed with a power curve optimized for the RPM range you are using, this 383 Chevy Marine Engine is built for both performance and reliability.

Payment Plans Available!paytommorrow_logo 383 Chevy Small Block Stroker Marine Engine: C383-M-C1Get Pre-Approved

Fuel Type

Fuel Type

Pump Gas
Max RPM

Max RPM

6,000
Idle Quality

Idle Quality

Lopey
Best Use

Best Use

Airboat
Horsepower: 420
Torque: 450
Bore/Stroke: 4.030 x 3.750
Compression: 10:1
Fuel Type: Pump Gas, 93 AKI (USA) / 98 RON
Block: OEM 350, 2-Bolt Gen II
Crankshaft: 4340 Forged Steel
Rods: H-Beam, 4340 Forged Steel
Pistons: 4032 Forged Aluminum 5cc valve relief
Bearings: Clevite Coated
Camshaft: Hydraulic Roller
Heads: Aluminum, As-Cast
Valves: Ferrea Super Alloy Exhaust, 6000 Series Intake
Rocker Arms: Billet Aluminum, Full Roller, Endurance
Intake: Not Included
Oil Pan: Extra Capacity, Windage / Oil Control
Valve Covers: Polished Aluminum, Dual Breather
Power Adder: N/A
Fuel Delivery: Not Included
Ignition: Not Included
Dyno Testing Image

Dyno Testing

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.

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.

Dyno Graph Image
Warranty Image

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.

Comparable Engines

Product: Current: 383 Chevy Marine Long Block 408 Marine Engine 427 Marine Engine
Horsepower: 420 470 530
Torque: 450 515 525
Best Use: Airboat Airboat Airboat
Max RPM: 6,000 6,000 6,000
Idle Quality: Lopey Lopey Lopey
Bore/Stroke: 4.030 x 3.750 4.030 x 4.000 4.125 x 4.000
Block: OEM 350, 2-Bolt Gen II 350 Chevy, Late Model Dart SHP
Crankshaft: 4340 Forged Steel 4340 Forged Steel 4340 Forged Steel
Rods: H-Beam, 4340 Forged Steel 4340 Forged H-Beam 4340 Forged H-Beam
Pistons: 4032 Forged Aluminum 5cc valve relief Forged SRP Professional Forged SRP Professional
Oil Pan: Extra Capacity, Windage / Oil Control 7 Quart Marine 7 Quart Marine
Camshaft: Hydraulic Roller Hydraulic Roller Hydraulic Roller
Heads: Aluminum, As-Cast Aluminum Dart Pro 1 Aluminum AFR CNC
Intake: Not Included Edelbrock RPM Air Gap Edelbrock RPM Air Gap
Price: Starting at $8,499 Starting at $8,499 Starting at $9,999
383 Chevy Small Block Stroker Marine Engine: C383-M-C1

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.

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.

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!