Manley 11508-8 Severe Duty Intake Valve Set Small Block Chevy 2.125" Head 11/32" Stem

The Manley 11508-8 Severe Duty Intake Valve Set is engineered for high-performance and racing applications in Small Block Chevrolet engines. This 8-valve set features a 2.125-inch head diameter with an overall length of 5.440 inches and 11/32-inch (0.3415-inch) stem diameter, with a +0.500-inch extended tip length for enhanced valve train stability.

Key Features:

• Constructed from premium NK-844 stainless steel material with over four times the ultimate tensile strength of competing intake valve materials at 1000°F
• Chrome stems and hardened tips for exceptional durability and wear resistance
• Swirl polished under-head areas and fully machined combustion faces for optimized airflow and combustion efficiency
• Rigorously tested to endure up to 100 million cycles at 40,000 psi—1,000 times better fatigue life than competitor valves
• Engineered to withstand extreme stress from 20,000 lbs in normal operation up to 60,000 lbs during valve bounce conditions

Manley's Severe Duty series represents the pinnacle of valve technology for high-temperature gasoline engines, providing racers and performance enthusiasts with unmatched reliability and longevity. Set includes 8 intake valves.