MANLEY 12737-1 VALVE-E/D 1.880,+.100

Description MANLEY 12737-1 Extreme Duty Series Chevrolet Big Block Exhaust Valve – 1.880 in. Head Dia., 5.522 in. O/A Length, 0.3415 in. Stem

Manley Performance Products Titanium Valves are designed to optimize engine performance, reduce valve train weight, and accommodate high-rpm applications.

Ideal for reducing valve train weight, these valves improve engine efficiency and overall performance. They are tailored for high-rpm and extended high-rpm applications, allowing for higher engine speeds and compatibility with aggressive camshaft profiles.

• One-piece forged construction with grain flow, ensuring durability and minimizing potential weak points compared to head-welded alternatives
• Meticulously machined in CNC turning centers and valve stem grinders to maintain exacting tolerances for optimal valve performance
• Finest titanium alloys used for both exhaust and exhaust valves, balancing mechanical properties, hardness, ductility, and fatigue strength at specific temperatures
• Stringent final inspection and strict quality control measures for quality, performance, reliability, and delivery within tight tolerances

Specifications:

• Head Diameter: 1.625 IN
• Stem Diameter: 0.3110 IN
• Valve Stem Diameter: 0.3110 IN
• O/A Length: 5.950 IN
• Tip Length: 0.300 IN
• Margin Width: 0.080 IN
• Seat Width: 0.065 IN
• Seat Angle: 55.00 DEG
• Seat Coating: None
• Underhead Angle: 20.00 DEG
• Underhead Radius: 3/4 IN
• Cylinder Head: All Pro
• Valve Series: Titanium Series
• Valve Material: Titanium
• Valve Groove Type: Bead Loc
• Valve Type: Exhaust
• Valve Quantity: 8