Manley 11473T-8 Titanium Exhaust Valve Set 1.625 in. Head

Titanium construction slashes valvetrain mass compared to conventional steel valves, sharpening throttle response and unlocking additional power at high RPM. Each valve is one-piece forged from premium titanium alloy, delivering superior grain flow that eliminates structural weak points and maintains integrity under the extreme heat and mechanical stress of aggressive camshaft profiles. CNC machining and precision grinding hold tight tolerances across every valve in the set, ensuring consistent sealing and optimal combustion efficiency. Key specifications: 1.625 in. head diameter, 0.3415 in. stem diameter, 5.660 in. overall length, 87 g per valve, conventional square groove, 45° seat angle, 25° underhead angle, and 0.290 in. tip length. Installed height is 0.700 in. longer than stock.

Key Features:

• One-piece forged titanium construction with superior grain flow for long-term strength
• Lightweight design reduces valvetrain mass and improves high-RPM efficiency
• Built to handle extreme RPM and aggressive camshaft profiles
• CNC machined and precision ground for tight tolerances and consistent valve-to-seat sealing
• Premium titanium alloy balances hardness, ductility, and fatigue resistance under extreme temperatures
• Rigorously inspected for reliability and consistency in demanding racing conditions
• 1.625 in. head diameter | 0.3415 in. stem diameter | 5.660 in. overall length | 87 g per valve
• Conventional square groove | 45° seat angle | 25° underhead angle

Designed for small block Chevrolet, Ford, and Chrysler applications, these Manley Titanium Exhaust Valves are the choice of performance enthusiasts and professional engine builders who demand precision and durability at the highest levels of competition.