Manley 11363-8 Stainless Steel Performance Intake Valve Head - 1.575

The Manley 11363-8 is a high-performance stainless steel intake valve engineered for demanding automotive applications. This precision-manufactured valve features a 1.575" head diameter, .3136" stem diameter, and 4.923" overall length, designed to deliver exceptional flow and durability in high-performance engines.

Key Specifications:

• Head Diameter: 1.575"
• Stem Diameter: .3136"
• Overall Length: 4.923"
• Tip Length: .175"
• Underhead Angle/Radius: 25° x 7/16"
• Margin: .065"
• Seat Width: .115"
• Top of Head: 18° Dish
• Weight: 89 grams
• Installed Height: Stock

Performance Features:

• Manufactured from Manley's exceptional Race Series stainless steel alloy
• Pro-Flo design with reduced stem diameter in fillet area for enhanced airflow and reduced weight
• Chrome-plated stems for superior durability and wear resistance
• Swirl-polished underhead for improved combustion efficiency
• Fully hardened tips for extended service life
• Completely machined combustion face for optimal sealing
• Precise stem-to-seat concentricity for consistent performance

Manley Performance has been the industry standard in high-performance valves for over four decades. Each valve is manufactured to exacting quality standards and designed to outflow and outperform competing products in even the most severe racing environments. Suitable for applications ranging from street performance builds to professional race engines producing 1000+ horsepower.