Manley Titanium Exhaust Valve Kit - Small Block Chevrolet - M&M Revolution

Starting with a one-piece forged construction that incorporates grain flow, these Manley titanium exhaust valves are built for serious performance in Small Block Chevrolet engines. This construction method is a notable step up from head-welded alternatives, creating a more durable component with fewer potential weak points. The use of advanced titanium alloys is key here, striking a careful balance between hardness, ductility, and fatigue strength, especially important when dealing with the high temperatures and stresses of an engine running at extended high-RPMs. These valves are meticulously machined in state-of-the-art CNC turning centers and valve stem grinders, ensuring they meet exacting tolerances for optimal performance. Each valve features Manley's Bead Loc? single radius keeper grooves, and they are delivered within tight tolerances thanks to strict quality control measures. It's important to note that these valves do not come with a hardened tip, so tip protection is required; Manley wear cap P/N 42139 or 42139TM is recommended.

The primary advantage of using titanium is significant weight reduction in the valve train. This lighter weight directly translates to improved engine efficiency and the ability to handle higher engine speeds more reliably. If you're building an engine for high-rpm applications or aggressive camshaft profiles, this reduction in reciprocating mass is crucial for maximizing performance and engine longevity. The head diameter measures 1.600 inches, the stem diameter is 0.3110 inches, and the overall length is 6.070 inches. This kit includes a set of 8 valves, ready for installation into your Small Block Chevrolet build.