Manley Performance Big Block Chevrolet Extreme Duty & Marine Valves 11/32" Stem Diameter

Extreme Duty & Marine Valves 11/32" Stem Diameters

- XH-432 XtremeAlloy Exhaust Material
- Swirl Polished and Fully Machined
- Chrome Stems and Hard Tips
- Greater Flow and Less Weight
- Reduced Stem Diameter

Specs:

Type: Exhaust

Head Diameter: 1.880

Stem Diameter: .3415

Installed Height: .100 Longer

O/A Length: 5.522

Tip Length: .250

Underhead Angle/Radius: 15° x 1/2"

Margin: .075

Seat Width: .085

Top of Head: 9° Dish

Weight/ Grams: 133

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