Manley 11405TB-8 Titanium Exhaust Valves 1.600" +.300

The Manley 11405TB-8 titanium exhaust valves are precision-engineered for high-performance and racing applications where reduced weight and maximum durability are critical. These valves feature a 1.600-inch head diameter with a +.300-inch longer than stock length, designed for small block Chevrolet, Ford, and Chrysler applications.

Premium Titanium Construction:

• One-piece forged construction with grain flow—not a head welded to a stem—for superior strength and reliability
• Premium titanium alloy specifically formulated for exhaust valve applications, balancing mechanical properties, hardness, ductility, and fatigue strength at elevated temperatures
• Micro-polished jewel-like surface finish that eliminates potential stress risers and increases fatigue strength
• Bead lock groove for positive valve keeper retention

Precision Manufacturing:

• Machined in state-of-the-art CNC turning centers and valve stem grinders to exacting tolerances
• Rigorous final inspection process ensures every valve meets tight tolerance specifications
• Typically .3415-inch stem diameter (verify fitment for your specific application)

Performance Benefits:

• Significant weight reduction compared to stainless steel valves for reduced valvetrain mass
• Enables higher engine RPM capability and compatibility with aggressive camshaft profiles
• Improved throttle response and valvetrain efficiency
• Ideal for drag racing, road racing, and serious high-performance street applications

The extended +.300-inch length accommodates cylinder heads with taller valve guide heights or custom applications requiring additional length. Manley recommends verifying valve guide sizing and clearances for proper fitment.