Manley Titanium Exhaust Valve Kit - Big Block Chevrolet - Brodix SR20 - Dart 20 Degree

These Manley titanium exhaust valves are forged from a single piece of titanium alloy, a design choice that ensures exceptional durability by maintaining consistent grain flow and minimizing potential weak points often found in welded alternatives. This one-piece construction is crucial for engines that will be pushed to their limits, especially in high-rpm applications where valve train stress is significantly increased. The titanium material itself plays a key role, offering a substantial reduction in weight compared to traditional steel valves. This lighter weight directly translates to less stress on the camshaft, lifters, and springs, allowing for higher engine speeds and improved responsiveness.

Manley meticulously machines these valves using advanced CNC turning centers and specialized valve stem grinders, holding very tight tolerances to ensure they perform optimally within your engine. The specific titanium alloy used is chosen for its balance of hardness, ductility, and fatigue strength, even at elevated engine temperatures. Each valve features Manley's Bead Loc? single radius keeper grooves, a design that helps secure the valve spring retainer firmly. It's important to note that while these valves are made from durable titanium, the tips require protection, so be sure to use appropriate tip material during installation.

This kit includes a set of eight exhaust valves, each measuring 1.800 inches in head diameter, 0.3415 inches in stem diameter, and 5.930 inches in overall length. They are specifically designed for Big Block Chevrolet engines paired with Brodix SR20 and Dart 20-degree cylinder heads. Given the high-performance nature of these components, careful installation following manufacturer guidelines is essential to realize their full potential and ensure long-term reliability.