Manley Performance 1.88in. Head Diameter / .3415in. Stem Diameter Extreme Duty Exhaust Valves – Set of 8 | Multiple Fitments (11743-8)

Big Block Chevrolet Extreme Duty Exhaust Valves - Set of 8 by Manley Performance

Manley Extreme Duty Series performance steel valves are a great choice for supercharged, alcohol-burning, or high-revving engines. These engines generate a lot of heat and require special valves that can handle that kind of punishment.

All valves are made from the best stainless steel available, with chrome stems and hardened valve tips. Extreme Duty Series valves are swirl-polished and fully machined and available with either undercut heads or straight stems.

Features

• Head Diameter: 1.880"
• Stem Diameter: .3415”
• Installed Height: Stock
• O/A Length: 5.422"
• Tip Length: .250
• Underhead Angle/Radius: 15° x 1/2”
• Margin: .075”
• Seat Width: .085”
• Top Of Head: 9° Dish
• Reduced Stem Diameter
• Chrome Stems and Hard Tips
• Swirl Polished and Fully Machined
• XH-432 XtremeAlloy Exhaust Material

Benefits

• Best for Top Fuel, Funny Car and Marine Engine
• More Hot Hardness and High Temperature Strength than any competitive offerings
• Greater Flow and Less Weight

Please Note: The image provided is generic and may not be an accurate representation of the product you will receive

Applications

• 1965, 1970–1974 Chevrolet Corvette
• 1965–1975 Chevrolet Chevelle
• 1967–1972 Chevrolet Camaro
• 1968–1970 Chevrolet Nova
• 1970–1972 Chevrolet Monte Carlo, Chevrolet trucks
• 1965–1972 Chevrolet Biscayne, Chevrolet Bel Air, Chevrolet Impala, Chevrolet Impala SS, Chevrolet Caprice
• 1970–1976 Chevrolet Caprice
• 1970–1975 Chevrolet Monte Carlo
• 1970–1975 Chevrolet El Camino
• 1971–1972 GMC Sprint

What's In The Box?

• 8 - Valves

Warranty

• Manley products, due to their intended use, are sold without warranty.