Manley Titanium Exhaust Valve Kit - Small Block GM, Ford, Chrysler

If you're rebuilding the top end of a small block GM, Ford, or Chrysler engine and pushing the limits with high-RPM operation, these Manley Titanium Exhaust Valves are a serious consideration. They're built to handle the demands of aggressive camshafts and extended periods at high engine speeds, where reducing reciprocating mass becomes critical for reliability and performance.

What sets these valves apart is their one-piece forged construction from advanced titanium alloys. This method ensures a strong, durable part with excellent grain flow, avoiding potential weak points found in welded designs. Manley machines these valves with precision in CNC centers, holding very tight tolerances for optimal sealing and performance. The titanium material itself is chosen for its balance of hardness, ductility, and fatigue strength at high temperatures, indicated by the 'HT' suffix, and they even feature inserted hard tips for added durability where the valve stem meets the rocker arm.

This kit includes a set of 8 exhaust valves, each weighing around 81 grams, with a 1.625-inch head diameter and a 0.3415-inch stem diameter. Manley puts each valve through a rigorous final inspection to ensure they meet their strict quality standards before they leave the factory. These are a well-built choice for serious engine builds where every ounce of weight savings and every bit of durability counts at high RPM.