When it comes to offshore and performance marine powerboats, there’s no such thing as “close enough.” These engines live at full throttle, under constant load, in the harshest environments imaginable. That’s why every custom marine build at Prestige Motorsports starts with one philosophy: build it once, build it right, and build it robust.
From Lake of the Ozarks to the Caribbean, our engines power everything from high-speed catamarans and luxury wooden boats to ski and tow vessels. Whether it’s a mild, reliable cruiser or a twin-supercharged offshore monster, we build the engines that make people turn their heads—and keep them running season after season.
Offshore racing boats live hard lives — long runs at wide-open throttle, unpredictable water conditions, and constant exposure to the elements. At Prestige Motorsports, we build them to thrive in that environment. Every package is designed for maximum durability, performance, and cooling efficiency — without compromising sound, style, or drivability.
Not every marine build is about sheer speed. Many of our customers want engines that run smooth, sound incredible, and make a statement when the hatch opens. From wooden Chris-Crafts to high-end ski and tow boats, our pleasure boat packages deliver effortless performance and a refined experience.
We don’t repurpose car engines for the water — we engineer every marine engine from the crank up. Our builds combine performance expertise from years in automotive racing with the demands of real-world marine conditions.
Dyno-Tested. Tuned. Turnkey Ready.
Every Prestige marine engine is dyno-tested under real-world conditions before it leaves our shop. We simulate prop load, plumb water through the sea pump, and tune for endurance — not just peak numbers.
That means your engine arrives broken in, validated, and ready to perform.
Built to Run in Salt, Fresh, and Everything In Between
Prestige engines are built from the inside out for marine duty. From stainless fasteners to aluminum pans and billet dampers, every detail resists corrosion and fatigue.
Optional hard-anodized cylinder heads and closed-cooling systems are available for saltwater applications or long-term storage near the coast.
Most of our offshore boat engines are complete turnkey packages—wired, dressed, and ready to drop in. But if you’ve already got components you love, we’ll build a long block and validate everything together on the dyno.
We start with proven packages, then fine-tune every detail until it fits your vessel perfectly.
Our commitment doesn’t end when your engine ships. We offer remote EFI support, tuning consultation, and ongoing service advice for as long as you own your engine.
Every customer receives a complete documentation packet with dyno sheets, test data, and build details — proof that your powerplant was done right from the start.
We build across a broad range of powerplants and platforms, including:
The sweet spot for most offshore customers lands between 650–750 horsepower, though many step up to supercharged twins pushing 1,100–1,500 hp each.
We can do both naturally aspirated engines or supercharged setups. And while we’ll still build a carbureted package if that’s your preference, we recommend fuel injection for smoother starts, easier tuning, and consistent performance in changing conditions.
Not sure which engine options are right for your boat?
At Prestige Motorsports, we bring performance, reliability, and craftsmanship together in every marine build. Whether you’re repowering your current boat or planning a brand-new project, our experts will guide you from discovery to delivery.
Let’s talk about your boat, your goals, and your vision — and build an engine worthy of it.
