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

If you're building a high-performance small block engine for GM, Ford, or Chrysler and planning to push it to higher RPMs, these Manley titanium exhaust valves are a serious consideration. Their primary advantage is significantly reducing the weight of the valve train. This lower mass means the valvetrain can handle higher engine speeds more reliably, which is crucial when you're aiming for maximum power output or running extended periods at high RPMs.

Manley makes these valves from a one-piece forged titanium alloy, which is a strong choice for durability and heat resistance. This construction method ensures consistent grain flow, avoiding potential weak spots you might find in other designs. They're machined to very tight tolerances on advanced CNC equipment, ensuring each valve seals perfectly and operates smoothly. The titanium alloy itself is chosen for a good balance of hardness, ductility, and fatigue strength, especially at the high temperatures found in performance exhaust ports. Each valve also features an inserted hard tip to handle the forces from the valve spring and rocker arm.

This kit includes a set of 8 exhaust valves, each with a 1.650-inch head diameter and a 0.3415-inch stem diameter, with an overall length of 5.460 inches. They come with Manley's BeadLoc groove, which is a unique single radius keeper groove designed for secure valve stem retention in demanding applications. Be sure to check the manufacturer's installation instructions for details on keeper compatibility and proper installation procedures.