Manley 11635-8 Stainless Steel Performance Valve 34mm Head .2740" Stem

The Manley 11635-8 is a high-performance stainless steel valve engineered for demanding automotive applications. Featuring a 34.0mm head diameter and .2740" stem diameter, this valve is precision-machined to deliver exceptional flow characteristics and durability in both street and competition environments.

Key Specifications:

• Head Diameter: 34.0mm
• Stem Diameter: .2740"
• Overall Length: 4.650"
• Tip Length: .470"
• Underhead Angle/Radius: 15° x 1/2"
• Margin: .060"
• Seat Width: .080"
• Top of Head: 9° Dish
• Weight: 62 grams
• Installed Height: Stock

Premium Construction Features:

• Race Series stainless steel alloy for maximum strength and heat resistance
• Chrome-finished stems for superior wear resistance and durability
• Swirl-polished under heads to optimize flow characteristics
• Fully hardened tips to withstand aggressive valve train components
• Completely machined combustion faces for consistent performance
• Precision-controlled margin heights and stem-to-seat concentricity

Manley Performance valves represent over 40 years of manufacturing excellence in stainless steel valve technology. Each valve is manufactured to exacting quality standards, ensuring optimal flow and performance even in the most severe operating conditions. The precision engineering delivers exact tolerances and superior concentricity, making these valves suitable for applications ranging from street performance builds to 1000+ horsepower race engines.

This valve is designed to provide maximum airflow while maintaining the structural integrity required for high-performance and racing applications. The carefully controlled specifications ensure reliable operation and consistent performance across the RPM range.