Manley 11530-1 Severe Duty Stainless Steel Intake Valve Big Block Chevy 2.300" Head

The Manley 11530-1 Severe Duty intake valve is engineered for extreme performance in supercharged, alcohol-burning, and high-revving Big Block Chevy engines. Constructed from premium NK-844 stainless steel material, this valve delivers exceptional durability and heat resistance in demanding racing applications.

Key Specifications:

• Valve head diameter: 2.300 inches
• Stem diameter: 0.372 inches (3/8")
• Overall length: 5.325 inches (+.100" longer than stock)
• Head style: 7-degree dish with Pro Flo 12-degree undercut
• Material: NK-844 stainless steel with chrome stem and hardened tip
• Margin width: 0.065 inches
• Seat width: 0.080 inches
• Weight: 160 grams

Performance Features:

• Swirl-polished underhead area for optimized airflow and combustion efficiency
• Fully machined combustion face for precise valve seating
• NK-844 material offers over four times the ultimate tensile strength of competing materials at 1000°F
• Proven to endure up to 100 million fatigue cycles in rigorous testing
• Chrome stem and hardened valve tip for extended service life

Designed specifically for high-temperature gasoline engines, this Severe Duty valve provides the reliability and performance demanded by serious racers and engine builders. Sold individually.