Manley Performance Big Block Chevrolet Severe Duty Valves Stock 3/8" Stem Diameters 1.940

Severe Duty Valves Stock 3/8" Stem Diameters

- XH-428 Stainless Exhaust Material
- Chrome Stems and Hard Tips
- Swirl Polished and Fully Machined

Specs:

Type: Exhaust

Head Diameter: 1.940

Stem Diameter: .3715

Installed Height: .100 Longer

O/A Length: 5.464

Tip Length: .220

Underhead Angle/Radius: 12° x 3/8"

Margin: .075

Seat Width: .100

Top of Head: 7° Dish

Weight/ Grams: 145

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