Show Financing?: Yes

632 Chevy Marine Short Block


When you need nothing short of extreme power for your boat, the 632 Big Block Chevy Marine engine is the hot ticket. With hundreds of hours in development under our belt, Prestige Motorsports has turned the prop on the airboat market in a powerful way. This engine has to be experienced in order to appreciate the optimized torque curve.

Payment Plans Available!paytommorrow_logo 632 Chevy Big Block Stroker Marine Engine: C632-M-SBGet Pre-Approved

Fuel Type

Fuel Type

Pump Gas


Idle Quality

Idle Quality

Best Use

Best Use

Horsepower: Up to 750
Torque: 825
Bore/Stroke: 4.600 x 4.750
Compression: 10:1
Fuel Type: 91+ AKI (USA) / 95-98 RON
Block: Aftermarket 10.2 Deck, Iron
Crankshaft: 4340 Forged Steel
Rods: H-Beam, 4340 Forged Steel
Pistons: 2618 Forged Aluminum 3cc Valve Relief
Bearings: Clevite H-Series Coated
Camshaft: -
Heads: -
Valves: -
Rocker Arms: -
Intake: Not Included
Oil Pan: -
Valve Covers: -
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


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: 632 Chevy Marine Short Block 582 Marine Engine 489 Marine Engine
Horsepower: Up to 750 650 550
Torque: 825 725 575
Best Use: Airboat Airboat Airboat
Max RPM: 6,000 6,000 6,000
Idle Quality: Lopey Lopey Lopey
Bore/Stroke: 4.600 x 4.750 4.600 x 4.375 4.280 x 4.250
Block: Aftermarket 10.2 Deck, Iron Aftermarket 9.8 Deck, Iron OEM 454, Gen V/VI
Crankshaft: 4340 Forged Steel 4340 Forged Steel 4340 Forged Steel
Rods: H-Beam, 4340 Forged Steel H-Beam, 4340 Forged Steel 4340 Forged H-Beam
Pistons: 2618 Forged Aluminum 3cc Valve Relief 2618 Forged Aluminum 10cc dome 4032 Forged Aluminum 18cc dome
Oil Pan: - Marine Marine
Camshaft: - Hydraulic Roller Hydraulic Roller
Heads: - Aluminum, As-Cast Rect Port Aluminum, As-Cast Rect Port
Intake: Not Included Not Included Not Included
Price: $6,999 Starting at $13,999 Starting at $10,599
632 Chevy Big Block Stroker Marine Engine: C632-M-SB

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!