ATK High Performance Engines DMH4 Chevrolet 5.7L 350 Marine Engine 1996-2005

The ATK High Performance Engines DMH4 is a remanufactured marine engine designed specifically for 1996-2005 Chevrolet 5.7L/350 cubic inch marine applications. This complete long block delivers reliable 260-300 horsepower output with marine-specific features for dependable on-water performance.

Engine Specifications:

• Displacement: 5.7L/350 cubic inches
• Bore x Stroke: 4.00 inches x 3.48 inches
• Compression Ratio: 9.0:1
• Horsepower Range: 260-300 HP
• Cast iron block and cylinder heads
• Externally balanced design
• Standard (clockwise) rotation

Key Features:

• Marine-grade construction for saltwater and freshwater use
• 8-bolt intake manifold configuration
• 2-bolt main bearing caps
• 1-piece rear main seal design
• Roller camshaft for improved performance and durability
• Factory-style specifications for direct replacement

This marine engine is engineered to meet the demanding requirements of boat applications, with components and specifications optimized for marine environments. The ATK DMH4 provides a cost-effective alternative to buying a new marine engine while maintaining OEM quality standards.