Manley Performance 38.5mm Extreme Duty Exhaust Valves - Set of 8 | Multiple Ford Fitments (11633-8)

38.5mm Extreme Duty Exhaust Valves w/ Triple Groove - Set of 8 by Manley Performance

Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted carburetor circle track competitors will all benefit by the use of XtremeAlloy exhaust valves. Exotic steel is required simply because of the enormous heat imposed on the exhaust valves in these applications.

Features

• Head Diameter: 38.5mm
• Stem Diameter: .2345”
• Installed Height: Stock
• O/A Length: 4.585"
• Tip Length: .380"
• Underhead Angle/Radius: 25° x 11/32”
• Margin: .080”
• Seat Width: .100"
• Top Of Head: 20° Dish
• Chrome Stems and Hard Tips
• Swirl Polished and Fully Machined
• XH-432 XtremeAlloy

Benefits

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

Please Note: Must use factory locks for triple grooves and use Manley’s Bead Loc® P/N 13088-24 with the Bead Loc® single radius groove.

Applications

• 2007-2008 Ford F-150 FX2
• 2005-2008 Ford F-150 FX4
• 2006-2008 Ford F-150 Harley-Davidson Edition
• 2005-2008 Ford F-150 King Ranch
• 2005-2008 Ford F-150 Lariat
• 2008 Ford F-150 Limited
• 2005-2008 Ford F-150 XL
• 2005-2008 Ford F-150 XLT
• 2008 Ford F-250 Super Duty FX4
• 2006-2008 Ford F-250 Super Duty King Ranch
• 2006-2008 Ford F-250 Super Duty Lariat
• 2006-2008 Ford F-250 Super Duty XL
• 2006-2008 Ford F-250 Super Duty XLT
• 2008 Ford F-350 Super Duty FX4
• 2006-2008 Ford F-350 Super Duty King Ranch
• 2006-2008 Ford F-350 Super Duty Lariat
• 2006-2008 Ford F-350 Super Duty XL
• 2006-2008 Ford F-350 Super Duty XLT
• 2005-2008 Ford Mustang GT
• 2007-2008 Ford Mustang Shelby GT

What's In The Box?

• 8 - Valves

Warranty

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