Manley Performance Valve-Severe Duty 2.080,+.100

Small Block Chevrolet Severe Duty Valves 5/16” (.311”) Stem

• No Need for Inserted Tips or Wear Caps
• XH-428 Stainless Material
• NK-844 Stainless Intake Material
• Chrome Stems and Hard Tips
• Swirl Polished and Fully Machined
• Thin Stem for Increased Flow and Light Weight

Note: These .311” stem valves are ONLY available with Bead Loc keeper grooves. Bead Locvalve locks are REQUIRED.
Hollow .311” stem Gen II blank P/N 11224H can be found on page 40 to support your custom requirements

Specifications:

Type: Int.

Head Diameter: 2.080

Stem Diameter: .3110

Installed Height: .100 Longer

O / A Length: 5.010

Tip Length: .290

Underhead Angle / Radius: 12° x 3/8”

Margin: .050

Seat Width: .080

Top Of Head: 7° Dish

Wgt / Grams: 112