Manley Performance Small Block Chevrolet Severe Duty "Pro Flo" Valves 1.600,+.100

Severe Duty "Pro Flo" Valves

- XH-428 Stainless Exhaust Material
- Chrome Stems and Hard Tips
- Swirl Polished and Fully Machined
- Improved Flow with "Pro Flo" Underhead

Specs:

Type: Exhaust

Head Diameter: 1.600

Stem Diameter: .3415

Installed Height: .100 Longer

O/A Length: 5.036

Tip Length: .250

Underhead Angle/Radius: Pro Flo: 12° x 3/8"

Margin: .085

Seat Width: .080

Top of Head: 7° Dish

Weight/ Grams: 100

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