MANLEY 11685-1 VALVE-CHEVY L-92 E/D 1.590

Description MANLEY 11685-1 Extreme Duty Series Exhaust Valve – Chevrolet Gen IV Small Block – LS3, L92, L99

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:

• Head Diameter: 30.00 MM
• Stem Diameter: 0.2740 IN
• Valve Stem Diameter: 0.2740 IN
• O/A Length: 4.587 IN
• Tip Length: 0.425 IN
• Margin Width: 0.050 IN
• Seat Width: 0.080 IN
• Top of Head: 9 Degree Dish
• Underhead Angle: 15.00 DEG
• Valve Series: Race Series
• Valve Sub-Series: Race Master
• Valve Material: Stainless Steel
• Valve Type: Exhaust
• Product Type: Engine Exhaust Valve
• Valve Quantity: 1
• Engine Detail: SOHC 4 Valve