Manley 12854-1 Severe Duty Stainless Steel Intake Valve Big Block Chevy 2.300in

The Manley 12854-1 is a high-performance Severe Duty intake valve engineered for Big Block Chevy applications. This valve is designed for bracket racing, oval track, and high-performance street engines where reliability and durability are critical.

Key Specifications:

• Head Diameter: 2.300 inches
• Stem Diameter: 0.3110 inches (5/16")
• Overall Length: 5.494 inches (+.250 longer than stock)
• Material: NK-844 stainless steel construction
• Chrome stem finish for enhanced wear resistance
• Hardened valve tip for extended rocker arm life

Features & Benefits:

• Swirl polished and fully machined for optimal flow characteristics
• Superior stainless steel material resists heat and corrosion
• Extended length design (+.250) accommodates modified geometry setups
• Chrome stem coating reduces friction and valve guide wear
• Hardened tip withstands high-rpm operation and aggressive valve spring loads

Manley Performance has built a reputation as a leading manufacturer of racing and performance valves since 1966. Each Severe Duty valve undergoes precision machining and quality control to ensure consistent performance in demanding applications. This single valve is ideal for replacement purposes or custom valve jobs requiring specific quantities.