Manley 11457T-8 Titanium Exhaust Valve Set 1.625 in. Head

These valves are purpose-built to reduce valvetrain mass, sharpen throttle response, and withstand the punishment of high-RPM, aggressive-cam applications. Each valve is constructed from a one-piece forged titanium billet, allowing superior grain flow that eliminates stress points and delivers lasting strength under extreme heat and load cycles. State-of-the-art CNC machining and precision grinding hold tight tolerances for consistent sealing and optimal combustion efficiency.

Key Features:

• Head Diameter: 1.625 in.
• Stem Diameter: 0.3415 in.
• Overall Length: 5.560 in.
• Valve Weight: 86 g each
• Seat Angle: 45°
• Underhead Angle: 25°
• Underhead Radius: 3/4 in.
• Margin Width: 0.100 in.
• Tip Length: 0.290 in.
• Installed Height: 0.600 in. longer
• Groove Type: Conventional Square
• One-piece forged titanium construction for maximum strength and grain integrity
• CNC machined and precision ground for tight tolerances and consistent sealing
• Premium titanium alloy balances hardness, ductility, and fatigue resistance at extreme temperatures
• Rigorously inspected for reliability in the most demanding racing conditions

Manley Titanium Exhaust Valves are the choice of performance enthusiasts and professional engine builders who demand lightweight strength without sacrificing durability. Designed for small block GM, Ford, and Chrysler engines, this set is ideal for high-RPM builds running aggressive camshaft profiles where reducing valvetrain mass directly translates to power gains and improved engine response.