BBC S/D 2.325in Intake Valves

The Manley BBC S/D 2.325in Intake Valves (Part No. 11838-8) are designed for big-block Chevy engine builds that require maximum reliability under extreme load. These valves are ideal for high-performance applications, including drag racing and marine propulsion, where factory components may not suffice.

Featuring a 2.325-inch head diameter and a valve stem diameter of 0.3415 inches, these intake valves are engineered for optimized flow characteristics while ensuring structural integrity under high-stress conditions. Their stainless-steel construction provides resistance to thermal fatigue and corrosion, making them suitable for forced-induction or alcohol-fuel environments.

Engine builders and high-performance shops will find these valves critical for builds exceeding 600+ horsepower or operating in salt-air marine environments. Buyers should confirm valve guide compatibility and seat angles for optimal performance in their specific applications.