Manley 12352-1 Severe Duty Pro Flo Intake Valve Chevy LT1 6.2L 2.120" Diameter

The Manley 12352-1 Severe Duty Pro Flo Intake Valve is engineered for high-performance and racing applications on Chevrolet LT1 6.2L engines. This individual valve represents the pinnacle of Manley's valve technology, crafted from premium NK-844 stainless steel material that delivers unmatched strength and durability under extreme conditions.

Key Specifications:

• Application: Chevrolet LT1 6.2L engines
• Valve Type: Intake valve
• Head Diameter: 2.120 inches
• Stem Diameter: 8mm (0.3133 inches)
• Overall Length: 5.253 inches (stock height)
• Material: NK-844 stainless steel
• Finish: Chrome plated stem
• Tip: Hardened valve tip
• Quantity: Single valve

Severe Duty Performance:

• NK-844 intake valve material offers superior tensile strength at operating temperatures
• Pro Flo design with optimized underhead geometry for improved airflow
• Chrome stem coating provides excellent wear resistance and reduced friction
• Hardened valve tips resist wear from rocker arm contact
• Rigorously fatigue tested to withstand high-stress racing conditions

Manley Severe Duty valves have been proven in extensive fatigue testing, enduring up to 100 million cycles at 40,000 psi and 1400°F. The NK-844 material demonstrates over four times the ultimate tensile strength of competing intake valve materials at 1000°F, making these valves ideal for bracket racing, oval track competition, and high-performance street engines.

This single valve allows for precise replacement or custom valve train builds. For complete valve jobs, eight valves are required for the LT1 6.2L engine.