BluePrint MBP3550CT Marine GM 355 365 HP Base Long Block

BluePrint MBP3550CT 365 HP Marine Core

BluePrint MBP3550CT Marine GM 355 365 HP Base Long Block units provide a high-torque sturdy engine architecture specifically engineered for the demanding environment of marine applications. This 5.8L 355ci Small Block Chevy features traditional cast-iron cylinder heads and a seasoned cast-iron block, engineered to produce a reliable 365 horsepower. Built with a hydraulic flat tappet camshaft and a precision internal/external balance, this core is a perfect fit for iconic boat platforms requiring consistent and durable power delivery.

As a precision-machined long block foundation, this assembly arrives with a factory-installed intake manifold and timing cover to streamline vehicle integration. The BluePrint MBP3550CT is backed by a professional 30-Month / 50,000-mile limited warranty, providing long-term structural reliability for your marine project. Designed with elite manufacturing standards, this marine centerpiece features a modern one-piece rear main seal and offers a balanced combination of traditional Chevy torque and marine-grade manufacturing reliability.

Key Features of BluePrint High Performance MBP3550CT

• 5.8L 355ci displacement delivering 365 horsepower performance.
• Marine-grade cast iron cylinder heads and block for structural durability.
• Hydraulic flat tappet camshaft ensures reliable valvetrain operation.
• Internal and external engine balance ensures vibration-free power.
• One-piece rear main seal prevents common Small Block oil leaks.
• Seasoned cast-iron block foundation for maximum structural integrity.
• Backed by a premium 30-Month / 50,000-mile limited warranty.

MBP3550CT Include:

• Intake Manifold
• Oil Pan
• Valve Covers
• Timing Cover