If you're looking to boost your HEMI 6.1 engine's performance, the Manley Valve - Intake, Valve-HEMI 6.1 R/F 2.100 HOLLOW is a fantastic choice. Designed specifically for high-performance applications, this valve is engineered to enhance airflow and efficiency, making it a popular upgrade among automotive enthusiasts.
This Manley valve is tailored for the domestic automotive market, making it a reliable choice for those looking to upgrade their HEMI engines. With a precision design, it ensures optimal fitment and performance.
The Manley 11670H-8 is compatible with various HEMI 6.1 applications. It's essential to verify fitment with your specific vehicle model to ensure seamless integration. This valve is designed to work universally, but we recommend double-checking compatibility to avoid any issues.
Customers have praised the Manley Valve for its durability and performance enhancement. Many have noted improvements in throttle response and overall engine efficiency after installation. Here are some insights from satisfied users:
"The Manley valves made a noticeable difference in my HEMI's performance. Installation was straightforward, and I could feel the power increase right away!"
"I was impressed with the quality of these valves. They fit perfectly and have held up under heavy use."
Prop 65 Warning: These products come with a Prop 65 warning label, so please be aware of this when making your purchase.
Universal Fitment: While these valves are designed for a broad range of applications, we recommend doing your research to confirm compatibility with your specific vehicle.
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Manley Performance, formerly called Manley Speed Equipment, was established in 1966 by Hank Manley shortly after his graduation from Brown University. His interest in the performance and racing traced back to 1960 when, at age 17, he rebuilt a 312 CID Ford V8 engine, installed a camshaft and three two-barrel carbs, and raced a ’56 Thunderbird on New Jersey’s streets. Initially, the company’s product lineup included stainless valves, lifters, camshafts, forged pistons, vanadium valve springs, pushrods, and timing chain kits. By 1998, Manley had outgrown its first Bloomfield, New Jersey facility and bought several acres in Lakewood, New Jersey. It was around this time that the brand’s name formally changed to Manley Performance. Nearly a decade later, the production space doubled in size.
Evolving in the Automotive SpaceLed by GM Michael Tokarchik in 2002, Manley entered the high-performance passenger car market as an OEM supplier of connecting rods for the 2003/2004 Ford SVT Mustang Cobra. Production reached 2500 rods per week without missing a single delivery date. Ford awarded Manley its highest ever supplier rating. Manley’s presence in the OEM market continued from there as a supplier for the Ford GT. After nearly 50 years since its inception, Manley continues to be globally recognized as the leading manufacturer of performance valves, connecting rods, cylinder head components, pushrods, drive and oil systems, and several other engine parts.
What is Manley’s Specialty?Manley Performance specializes in high-performance engine internals that range from stock replacements to full-on race applications. They have been the standard of the industry since their inception; a fact that still remains true now as they have ventured into new markets. Today, Manley Performance continues to re-define itself in a high-performance aftermarket industry that is constantly evolving. The brand has developed a wide range of new products for growing markets that include sport compact, Ford modular, and Chevy LS. Manley also maintains its leadership role with the traditional V8 engine business.
Get Manley Performance at Vivid RacingIf you are in need of a serious upgrade to your engine, then Manley Performance parts should be on your list. Like all of our suggested manufacturers, Manley uses the best materials available to ensure a quality part for your engine. We carry Manley connecting rods, crankshafts, pistons, and valve components. The large lineup of domestic parts includes sport compact vehicles, Ford modular engines, GM’s LS series internals, and HEMI product upgrades for Chrysler.
If you can’t find what you’re looking for or need help choosing the right part for your car, call our sales team at (480) 966-3040. We are here to make your buying experience a breeze.