Manley Performance Pontiac 400-428-455 1.770 Race Master Exhaust Valves (Set of 8)

Race Master & Race Flo Valves

- XH-426 Stainless Exhaust Material
- Chrome Stems and Hard Tips
- Swirl Polished and Fully Machined

Specs:

Type: Exhaust

Head Diameter: 1.770

Stem Diameter: .3415

Installed Height: Stock

O/A Length: 5.100

Tip Length: .250

Underhead Angle/Radius: 25° x 3/8"

Margin: .080

Seat Width: .100

Top of Head: 20° Dish

Weight/ Grams: 117

Set of 8