Manley 11671-8 Race Master Stainless Steel Exhaust Valve Chrysler HEMI 6.1L Triple Groove 1.625in

The Manley 11671-8 is a Race Master Series stainless steel exhaust valve engineered for the Chrysler/Dodge Gen III HEMI 6.1L engine with the triple groove keeper configuration. Featuring a 1.625-inch head diameter and stock installed height, this valve is precision-built for bracket racing, drag racing, oval track, and high-performance street applications operating under 8,000 RPM.

Key Specifications:

• Valve Type: Exhaust
• Head Diameter: 1.625 in.
• Stem Diameter: 0.3125 in.
• Overall Length: 4.925 in.
• Tip Length: 0.120 in.
• Underhead Angle/Radius: 25° x 1/2"
• Margin: 0.065 in.
• Seat Width: 0.100 in.
• Top of Head: 20° Dish
• Installed Height: Stock
• Weight: 93 grams
• Keeper Groove: Triple Groove (factory locks required)

Construction & Materials:

• Manufactured from XH-426 stainless steel exhaust alloy for superior high-temperature strength and durability
• Chrome-plated stems for enhanced wear resistance and reduced friction
• Fully hardened tips to withstand aggressive rocker arm contact
• Swirl-polished underhead and fully machined combustion face for optimal sealing and flow
• Hollow stem design reduces valve weight without sacrificing strength

Manley's Race Master valves are designed to match or exceed EV-8 (21-4N) alloy valves in tensile strength testing, delivering a race-proven upgrade at a competitive price point. These valves are also an approved choice for alcohol-fueled engine applications.

Note: Triple groove configuration requires use of factory-style valve locks. For Bead Loc® keeper groove applications, see Manley part number 11671B-8. Valve guide clearance should be verified and machine work performed as needed to match the 0.3125 in. stem diameter.