Manley Chevrolet Big Block Exhaust Valve Kit - 1.800in Head Dia. 5.930in O/A Length, 0.3415in Stem - 12351-8

Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to 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, these valves are your ticket to unparalleled performance.

Features

• Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.
• XH-432 XtremeAlloy: The hallmark of excellence in exhaust valve material construction.
• Built to Last: Featuring chrome stems and hard tips for exceptional longevity and wear resistance.
• Optimized Performance: Swirl polished under head areas and fully machined combustion faces improve airflow and combustion efficiency.

Specs

• Manley Valve
• Exhaust, Valve-E/D BRODIX SR20? 1.800, 5930
• Exhaust, Valve-E/D BRODIX SR20? 1.800, 5.930
• Product Market: Domestic
• Head Diameter: 1.800
• Valve Head Diameter: 1.800
• Stem Diameter: 0.3415
• Valve Stem Diameter: 0.3415
• O/A Length: 5.930
• Valve Length: 5.930
• Valve Tip Length: 0.250
• Tip Length: 0.250
• Margin Width: 0.080
• Seat Width: 0.060
• Top of Head: 9 Degree Dish
• Valve Head Shape: 9 Degree Dish
• Underhead Angle: 15.00
• Underhead Radius: 1/2
• Cylinder Head: BB-4/SAR, SR20
• Valve Series: Extreme Duty Series
• Valve Material: Inconel
• Valve Type: Exhaust
• Product Type: Engine Exhaust Valve Kit
• Valve Quantity: 8
• Engine Valve Quantity: 8