MANLEY 11681-8 Exhaust Valve Kit Extreme Duty Series for CHEVROLET Gen III/IV Small Block LS1 / LS2 / LS6

Description MANLEY 11681-8 Exhaust Valve Kit Extreme Duty Series for CHEVROLET Gen III/IV Small Block LS1 / LS2 / LS6

Manley Performance Products Extreme Duty Series Valves are engineered for the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted carburetor circle track competitors.

• Designed for applications requiring extreme force and heat resistance, including Top Fuel, Funny Car, and marine engine applications
• XH-432 XtremeAlloy exhaust valve material construction
• Chrome stems and hard tips for longevity and wear resistance
• Swirl-polished underhead areas and fully machined combustion faces improve airflow and combustion efficiency

Specifications:

• Product Market: Domestic
• Head Diameter: 1.575 IN
• Stem Diameter: 0.3136 IN
• Valve Stem Diameter: 0.3136 IN
• O/A Length: 4.923 IN
• Installed Height: Stock
• Tip Length: 0.175 IN
• Margin Width: 0.065 IN
• Seat Width: 0.115 IN
• Top of Head: 18 Degree Dish
• Underhead Radius: 7/16 IN
• Weight: 95 GR
• Emissions Code: 3
• Cylinder Head: LS6 Cylinder Head
• Valve Series: Extreme Duty Series
• Valve Material: Inconel
• Valve Type: Exhaust
• Product Type: Engine Exhaust Valve Kit
• Valve Quantity: 8