Manley Performance Race Flo Intake Valves

2005–2010 Chrysler 300C, Dodge Challenger, Dodge Charger, Dodge Magnum, Jeep Grand Cherokee 6.1L HEMI

Part #: 11670B-8

Overview

Manley Performance Race Flo Intake Valves are precision-engineered components designed specifically for the Chrysler 6.1L HEMI engine, covering model years 2005 through 2010. Built to meet the rigorous demands of bracket racing, drag racing, and oval track competition, these valves deliver reliable performance at engine speeds up to 8000 RPM. They are ideal for racers and performance enthusiasts seeking to optimize airflow and combustion efficiency, resulting in improved throttle response and enhanced engine durability under high-stress conditions.

Whether you are assembling a dedicated race motor or upgrading your performance engine, Manley Race Flo Intake Valves provide a dependable solution for maximizing intake flow and maintaining valve train reliability during intense track sessions.

Key Features

Manley Race Flo Intake Valves incorporate advanced design and premium materials to ensure superior performance and longevity in demanding racing environments. Key features include:

• Precision-machined 2.100 inch intake valve diameter optimized for Chrysler 6.1L HEMI engines
• Race Series construction engineered to withstand high RPM and extreme racing conditions
• Improved airflow and combustion efficiency compared to factory intake valves
• Manufactured to tight tolerances for consistent valve seating and reliable operation
• Compatible with engines operating up to 8000 RPM for high-performance use
• Set of 8 valves included to fully equip a V8 cylinder head
• Designed for bracket, drag, and oval track racing applications

Construction & Design

These intake valves are crafted from high-quality materials selected for their strength and heat resistance, essential for the extreme conditions encountered in racing. The valves feature a balanced design that promotes smooth airflow and reduces valve float at elevated engine speeds. Manley’s Race Flo valves are engineered with precise stem and head geometry to ensure optimal sealing and durability under repeated thermal and mechanical stress.

A durable coating protects the valves from wear and corrosion, extending service life and maintaining consistent performance throughout race events or extended track use.

Installation & Fitment

Manley Race Flo Intake Valves are direct replacements for the factory intake valves on Chrysler 6.1L HEMI engines from 2005 to 2010. Installation requires standard valve train disassembly and reassembly procedures and fits OEM cylinder heads without the need for modifications to valve guides or seats when installed by a qualified engine builder or machinist. These valves are compatible with stock valve springs and retainers designed for the 6.1L HEMI engine, requiring no cutting, drilling, or special tuning.

What's Included

• Set of 8 Manley Race Flo Intake Valves, 2.100 inch diameter

Ideal For

• Bracket racers seeking reliable high-RPM valve performance
• Drag racers requiring durable intake valves for repeated launches
• Oval track competitors demanding consistent valve sealing and flow
• Engine builders upgrading Chrysler 6.1L HEMI engines for performance applications
• Enthusiasts focused on maximizing airflow and power in naturally aspirated or forced induction setups