Manley Performance Race Master Intake Valves

Chrysler 300C / Dodge Charger / Magnum 05-08 5.7L Hemi

Part #: 11664-8

Overview

The Manley Performance Race Master Intake Valves are precision-engineered components designed specifically for Chrysler and Dodge 5.7L and 6.1L HEMI V8 engines from 2003 to 2008. Built to withstand the rigorous demands of bracket racing, drag racing, and oval track competition, these intake valves deliver exceptional durability and reliable performance at engine speeds up to 8000 RPM.

Ideal for serious racers and performance enthusiasts alike, these valves enhance valvetrain strength and longevity while maintaining optimal airflow for improved power delivery. Whether upgrading a stock engine or building a high-performance race motor, Manley Race Master Intake Valves provide the dependable operation needed under extreme conditions.

Key Features

Manley’s Race Master Intake Valves incorporate advanced engineering and premium materials to ensure superior performance and durability for high-RPM HEMI applications. Key features include:

• Specifically designed for Chrysler/Dodge 5.7L and 6.1L HEMI V8 engines
• Rated for use up to 8000 RPM, perfect for bracket, drag, and oval track racing
• Precision-machined valve heads for optimal sealing and enhanced airflow efficiency
• Constructed from high-grade alloy steel with heat treatment for maximum strength and fatigue resistance
• Exact factory valve dimensions for direct fitment without modifications
• Improves engine breathing to support increased horsepower and torque potential
• Compatible with both stock and aftermarket performance camshafts and valvetrain components

Construction & Design

Manley Race Master Intake Valves are crafted from premium alloy steel and undergo a rigorous heat treatment process to achieve an ideal balance of hardness and toughness. This ensures excellent resistance to wear, deformation, and fatigue, even under the extreme heat and stress of high-RPM racing engines.

The valve faces and stems are precision-ground to exact tolerances, promoting consistent valve seating and smooth operation. The design optimizes airflow through the intake ports, enhancing volumetric efficiency and throttle response without compromising durability.

Installation & Fitment

These intake valves are designed as direct replacements for factory valves in 2003–2008 Chrysler 300, Chrysler 300C, and Dodge Challenger models equipped with 5.7L or 6.1L HEMI engines. They fit OEM valve guides and seats precisely, requiring no special machining or modifications for installation.

Installation is straightforward for experienced engine builders and professional shops, and the valves are fully compatible with stock and aftermarket valvetrain upgrades designed for HEMI engines.

What's Included

• Set of 8 Manley Race Master Intake Valves for 5.7L and 6.1L HEMI engines

Ideal For

• Bracket racers and drag racers seeking durable, high-performance intake valves
• Oval track racers requiring reliable valvetrain components for sustained high RPM operation
• Performance enthusiasts upgrading Chrysler/Dodge HEMI engines for improved airflow and power
• Engine builders focused on maximizing valvetrain strength and longevity under racing conditions

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.