Drop-In-Ready 632 Airboat Engine

Starting at $31,999

When you need nothing short of extreme power for your boat, 632 Big Block Chevy Air Boat engine is a great option. 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.

Piston Oilers – Included
Spring Oilers – Included
Flexplate – JW Wheel w/ ARP bolts
Starter – Ultra Torque/High Speed

Payment Plans Available!paytommorrow_logo 632 Chevy Big Block Airboat Engine: C632-AB-TK-1Get Pre-Approved

Fuel Type

Fuel Type

Pump Gas


Idle Quality

Idle Quality

Best Use

Best Use

Horsepower: 780+
Torque: 840+
Bore/Stroke: 4.600 x 4.750
Compression: 10.5:1
Fuel Type: 93 AKI (USA) / 98 RON
Block: Aftermarket 10.2" Tall Deck, Iron
Crankshaft: 4340 Forged
Rods: H-Beam, 4340 Forged Steel
Pistons: 2618 Forged Aluminum, Gas Ported
Bearings: Clevite H-Series Coated
Camshaft: Hydraulic Roller
Heads: Aluminum, CNC Rectangle Port
Valves: Ferrea Super Alloy Exhaust, 6000 Series Intake
Rocker Arms: Billet Aluminum, Full Roller, Girdled
Intake: Custom Pro-Filer Sniper Aluminum
Oil Pan: Marine
Valve Covers: Polished Aluminum, Custom Made Dual Breathers
Power Adder: N/A
Fuel Delivery: Holley HP EFI
Ignition: Dual Sync Distributor
Pulley Kit: March Performance
Dyno Testing Image

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.

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.

632 Chevy Big Block Airboat Engine: C632-AB-TK-1

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!