Race Flo 1.55in. Exhaust Valves for Ford 289 / 302 / 351W Engines by Manley Performance
Manley's Race Flo Exhaust Valves are constructed from XH-426 Stainless Steel for unparalleled durability. Chrome stems and hard tips are incorporated for enhanced longevity and wear resistance. The valves feature swirl polished under head areas and fully machined combustion faces to optimize airflow and combustion efficiency.
Measurements
- Head Diameter: 1.55in.
- Stem Diameter: 0.3415in.
- Installed Height: Stock
- O/A Length: 5.08in.
- Tip Length: 0.395in.
- Underhead Angle / Radius: Pro Flo: 12°x3/8"
- Margin: 0.06
- Seat Width: 0.1
- Top of Head: 5° Dish
- Weight: 94g
