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Vivid Racing Gear Select the year of your Chevrolet Camaro:
Manley Severe Duty Intake Valves for Chevrolet LS3/L-99 w/L-92 Heads
Upgrade your Chevrolet LS engine with the Manley Severe Duty Intake Valves (Part Number: 11686-8). Crafted with precision and built to last, these valves are engineered to meet the demands of high-performance applications while ensuring a perfect fit for your LS3 or L-99 engine equipped with L-92 heads.
Features That Stand Out
- High-Quality Stainless Steel: Manley has been a leader in stainless steel valve manufacturing for over 40 years, setting industry standards with their exceptional quality.
- Race Series Alloy: These valves utilize a unique alloy that enhances durability and performance, making them ideal for both street and race applications.
- Advanced Design: The "Pro-Flo" design reduces the stem diameter in the fillet area, promoting increased airflow and reducing valve weight—perfect for those looking to maximize engine efficiency.
- Precision Engineering: With swirl polished under heads, fully hardened tips, and closely controlled margin heights, these valves ensure superior performance and longevity.
Benefits of Choosing Manley Valves
Whether you’re cruising on the street or pushing your limits at the drag strip, these valves are designed to deliver exceptional flow and performance. They are suitable for a wide range of applications, from mild street performers to high-horsepower race cars exceeding 1000+ horsepower.
Specifications
- Part Number: 11686-8
- Material: Stainless Steel
- Application: Chevrolet LS3/L-99 with L-92 Heads
- Valve Type: Intake
Fitment Information
These valves are specifically designed for Chevrolet LS3 and L-99 engines that utilize L-92 cylinder heads. For optimal performance, it’s crucial to check your valve guide size to ensure proper valve stem to guide clearance. In some cases, honing may be necessary when replacing stock factory valves.
What Customers Are Saying
Customers have praised the Manley Severe Duty Intake Valves for their impressive performance and reliability. Many have noted how easy they are to install and how they significantly improved their engine's airflow. Here are a few highlights from user reviews:
- "The performance difference was noticeable right away. These valves are a game changer!"
- "I’ve used Manley valves in multiple builds, and they never disappoint. Highly recommend!"
- "Great quality and fit perfectly on my LS3. Worth every penny!"
Upgrade your engine with the Manley Severe Duty Intake Valves and experience the difference in performance and reliability that comes from over four decades of manufacturing excellence.
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Make Vehicle | Model | Year |
|---|---|---|
|
2010-2013 Chevrolet Camaro |
Camaro | 2010-2013 |
|
2008-2013 Chevrolet Corvette |
Corvette | 2008-2013 |
|
2008-2009 Pontiac G8 |
G8 | 2008-2009 |
|
2005-2006 Pontiac GTO |
GTO | 2005-2006 |
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.
