Manley 11620H-8 Stainless Steel Performance Intake Valve 2.165" LS Engine

The Manley 11620H-8 is a high-performance stainless steel intake valve engineered for Chevrolet LS engines. Manufactured from Manley's proven Race Series stainless alloy, this valve delivers exceptional flow characteristics and durability for both street and competition applications.

Valve Specifications:

• Head Diameter: 2.165 inches
• Stem Diameter: 0.3133 inches
• Overall Length: 4.900 inches
• Tip Length: 0.160 inches
• Underhead Design: Pro Flo 12 x 3/8 inch
• Margin: 0.055 inches
• Seat Width: 0.100 inches
• Top of Head: 7 Dish design
• Installed Height: Stock
• Weight: 107 grams

Performance Features:

• Pro Flo underhead design reduces stem diameter in the fillet area for increased airflow and reduced valve weight
• Chrome-plated stems for superior wear resistance and reduced friction
• Swirl-polished underheads for optimized flow characteristics
• Fully hardened tips for extended service life with aggressive valve train components
• Completely machined combustion faces ensure consistent performance
• Precise stem-to-seat concentricity for proper sealing and heat transfer

Built to Manley's exacting quality standards developed over four decades of valvetrain manufacturing, the 11620H-8 intake valve is suitable for applications ranging from mild street builds to high-performance race engines exceeding 1000 horsepower. The Race Series stainless alloy provides excellent hot hardness and corrosion resistance, while the Pro Flo design maximizes flow without sacrificing strength.