Manley Performance Race Master Exhaust Valves

2003–2008 Chevrolet 5.7L HEMI

Part #: 11666B-8

Overview

The Manley Performance Race Master Exhaust Valves are precision-engineered components designed specifically for Chevrolet 5.7L HEMI engines from 2003 through 2008. Built to endure the extreme demands of bracket racing, drag racing, and oval track competition, these valves provide the durability and reliability required for high-RPM performance. Whether you are assembling a dedicated race engine or upgrading your existing build, these valves offer the strength and consistency needed to maintain valve train integrity at engine speeds up to 8000 RPM.

Crafted with racers and performance enthusiasts in mind, Manley’s Race Master valves ensure optimal exhaust flow and secure valve spring retention, making them an essential upgrade for any high-performance 5.7L HEMI application.

Key Features

Manley’s Race Master Exhaust Valves incorporate advanced design and manufacturing techniques to deliver superior performance and longevity. Key features include:

• Bead Loc groove design for enhanced valve spring retention and durability under high RPM stress
• 2.020-inch valve head diameter optimized for improved exhaust flow in 5.7L HEMI engines
• Manufactured from premium materials engineered to resist wear, heat, and fatigue common in racing environments
• Precision ground valve stems for smooth valve guide fitment and reduced friction
• Specifically engineered for Chevrolet 5.7L HEMI engines through 2008, ensuring exact fitment and compatibility
• Ideal for bracket, drag, and oval track racing applications where valve reliability at high RPM is critical
• Designed to support engine operation up to 8000 RPM without compromising valve train stability

Construction & Design

These exhaust valves feature a robust construction tailored to withstand the rigors of high-performance racing. The Bead Loc groove enhances valve spring retention, preventing spring slippage during aggressive engine operation and ensuring consistent valve timing and performance.

Manley utilizes high-quality materials combined with advanced heat treatment processes to provide excellent resistance to thermal and mechanical stresses. Each valve is precision-machined to exacting tolerances, ensuring consistent sealing and optimal exhaust flow, which contributes to improved engine efficiency and durability over extended periods of demanding use.

Installation & Fitment

The Manley Race Master Exhaust Valves are designed as direct replacements for factory exhaust valves in Chevrolet 5.7L HEMI engines from 2003 to 2008. Installation follows standard engine assembly procedures and is compatible with existing valve guides and springs designed for this engine family.

No modifications such as cutting, drilling, or special tuning are necessary when installing these valves, provided the engine is built to accommodate performance components. This makes them a straightforward upgrade for racers and engine builders seeking reliable, race-proven valve components.

What's Included

• Set of 8 Manley Race Master Exhaust Valves with Bead Loc groove
• 2.020-inch valve head diameter

Ideal For

• Racers competing in bracket, drag, or oval track events
• Performance enthusiasts upgrading their 5.7L HEMI engines for higher RPM operation
• Engine builders seeking durable, race-proven valve components
• Applications requiring reliable valve train components for engines operating up to 8000 RPM

Manley Performance manufactures high-strength engine internals for serious builds—especially forged pistons, connecting rods, valves, and valvetrain components developed for racing and high-output street applications. If you’re building for boost, high compression, or sustained RPM, Manley is a common choice for parts engineered to take abuse and keep power reliable.