Manley Titanium Exhaust Valve Kit - Big Block General Motors - Dart Pro1

If you're building a high-performance Big Block General Motors engine, especially one designed for aggressive camshaft profiles and extended high-rpm operation, these Manley Titanium Exhaust Valves are a serious consideration. They're specifically made to work with Dart Pro1 cylinder heads and are designed to significantly reduce the weight in your valve train. This weight reduction is key to allowing your engine to rev higher and more freely, making it ideal for racing or any application where maximizing engine speed is critical.

What sets these valves apart is their one-piece forged construction. This method ensures a solid, durable part with consistent grain flow, avoiding the potential weak points found in welded alternatives. Manley uses exceptional titanium alloys, carefully selected for their balance of hardness, ductility, and fatigue strength at high temperatures. Each valve is then meticulously machined on advanced CNC equipment to exacting tolerances, ensuring they perform precisely as intended. This attention to detail means you get a valve that's not only lightweight but also incredibly durable and reliable under demanding conditions.

This kit includes a set of 8 exhaust valves, each measuring 1.900 inches in head diameter, 0.3415 inches in stem diameter, and 5.440 inches in overall length. They are available with either conventional square or Manley's Bead Loc single radius keeper grooves. Note that if your part number does not have a 'T' suffix, it does not include a hard tip, and tip protection, such as Manley wear cap P/N 42104 or 42104TM, is required.