Mercruiser Engines From Hi-Performance Poker-Run engines thru Small Block V-8's and MerCruiser Diesels, TNT Champion Motors has the right engine for your needs. Make sure your new engines are rigged by the world's best! HP 900 SC 850 HP The HP900 SC Dry–Sump produces an unprecedented 900 crankshaft horsepower. This legendary Poker Run engine features a race-proven ’Dry–Sump’ lubrication system–standard for 2001–resulting in less drag from oil on rotating components, reducing friction and adding horsepower for better overall performance.. HP 500 EFI 470 HP For intermediate-size sport boats, offshore boats and poker runners there’s the sophisticated 502 CID HP500 EFI. It’s the power of choice for the American Power Boat Association’s (APBA) Factory and Super Cat Light offshore racing classes. MX 6.2 MPI The MX 6.2 MPI is designed and built exclusively by MerCruiser and is available only from MerCruiser. It's the perfect choice for midas fishing boats and cruisers. HP 575 SCI 550 HP It’s a first for Mercury Racing® The HP575 SCi pairs a custom supercharger with fuel injection for greater power and control. You’ll enjoy turnkey starting, smooth-shifting, instant throttle response, and a very broad torque band throughout the engine’s operating range. 350 HP Scorpion 377 This state-of-the-art fuel-injected small-block engine is at home powering 20' to 30' catamarans and vee-bottom sport boats. Smaller and lighter than displacement big blocks, the Scorpion 377 actually provides comparable performance, and its compact size and high power-to-weight ratio make it extremely versatile. No wonder it is the power of choice for the APBA’s Offshore Pro Series Outlaw V Class. 350 MAG MPI Horizon It's amazing how much performance you can pack into a small block V-8, The 350 Mag MPI Horizon is the perfect example. All the maintenance-saving technology you'd expect from a Horizon engine, all the craftsmanship you'd expect from MerCruiser. 8.1 S HO Horizon engine technology combines performance gains with minimal hassle and upkeep. 8.1 S and 8.1 S HO (high-output version) engines give you precisely that and considerably more.