MANLEY 11608-8 Intake Valve Kit Race Series (1.338" Head Dia., 4.985" O/A Length, 0.2740" Stem) for GM 6.6L Duramax Diesel

Description MANLEY 11608-8 Intake Valve Kit Race Series (1.338\" Head Dia., 4.985\" O/A Length, 0.2740\" Stem) for GM 6.6L Duramax Diesel

Manley’s Race Series valves are engineered to meet the demands of bracket, drag, and oval track racers and are intended for engines operating under 8,000 RPM.

• Both exhaust (XH-426) and Intake (NK-842) valves are constructed from high-quality Stainless steel.
• Chrome stems and hard tips provide enhanced longevity and wear resistance.
• Swirl-polished underhead areas and fully machined combustion faces optimize Airflow and combustion efficiency.
• Available in Race Master straight-stem and Race Flo shapes.

Recommended for Alcohol Engines: These valves are recommended for exhaust valves in alcohol engines, ensuring reliable performance in Demanding conditions.

Specifications:

• Product Market: Domestic
• Head Diameter: 1.338 IN
• Stem Diameter: 0.2740 IN
• Valve Stem Diameter: 0.2740 IN
• O/A Length: 4.985 IN
• Tip Length: 0.480 IN
• Margin Width: 0.050 IN
• Seat Width: 0.085 IN
• Top of Head: Flat Face
• Underhead Angle: 25.00 DEG
• Emissions Code: 3
• Valve Series: Race Series
• Valve Sub-Series: Race Flo
• Valve Material: Stainless Steel
• Valve Type: Intake
• Product Type: Engine Intake Valve Kit
• Valve Quantity: 8
• Engine Detail: 4 Valve