ATK Marine DM03 Chevy 350 Rebuilt LB – Reverse Rotation

ATK Marine DM03 350ci Reverse Rotation LB

ATK Marine DM03 Chevy 350 Rebuilt LB – Reverse Rotation engines deliver a specialized high-torque marine powertrain specifically engineered for dual-engine inboard configurations. This 5.7L 350ci Small Block Chevy features a reverse rotation setup with a 9:1 compression ratio, optimized for synchronized performance in twin-engine boating applications. Built with cast-iron cylinder heads and a seasoned block, this remanufactured unit utilizes a hydraulic flat tappet camshaft and an internal balance to ensure stable mechanical operation under heavy aquatic loads.

Designing your specialized swap is facilitated by the inclusion of a high-performance oil pump and gasket set, though the unit remains a remanufactured marine foundation in an un-dressed state. The ATK DM03 features a driver-side dipstick and a traditional 2-piece rear main seal, requiring builders to integrate their own marine-grade intake manifold and ignition system. Protected by a professional 1-Year limited warranty, this reverse-rotation engine is the ideal choice for marine professionals and enthusiasts demanding precision-assembled 350ci power for specialized inboard drives.

Key Features of ATK Marine DM03

• 5.7L 350ci displacement with 9:1 compression for marine use.
• Engineered for reverse rotation in twin-engine inboard applications.
• Cast iron cylinder heads and block for maximum structural durability.
• Hydraulic flat tappet camshaft for consistent valvetrain stability.
• Includes high-performance oil pump and gasket set.
• Traditional 2-piece rear main seal and driver-side dipstick.
• Standard 1-Year professional limited warranty included.

DM03 Include:

• Cylinder Heads
• Oil Pump
• Gasket Set