ATK High Performance Engines VMH4 Chevy 350 5.7L Marine Engine 1996-2005

The ATK High Performance Engines VMH4 is a complete replacement marine engine designed specifically for 1996-2005 Chevrolet marine applications. This 5.7L (350 cubic inch) V8 engine delivers reliable performance with 260 to 300 horsepower, making it an ideal replacement for worn or damaged marine powerplants.

Engine Specifications:

• Displacement: 5.7L / 350 cubic inches
• Bore x Stroke: 4.00 inch x 3.48 inch
• Compression Ratio: 9.0:1
• Power Output: 260-300 horsepower
• Configuration: V8, externally balanced
• Main Caps: 2-bolt main
• Camshaft: Roller cam design
• Rear Seal: 1-piece rear main seal

Construction Features:

• Cast iron engine block and cylinder heads for durability in marine environments
• 8-bolt intake manifold mounting pattern
• Valve covers with bolt-through-center design
• Marine-specific components throughout

Complete Assembly Includes:

• Oil pan for marine application
• Plastic front timing cover with sensor provision
• Valve covers
• All internal components fully assembled and tested

This marine engine is engineered to meet the demanding requirements of saltwater and freshwater environments, providing dependable power for your boat. The externally balanced design and roller cam configuration ensure smooth operation and enhanced longevity compared to flat-tappet designs.