2 3/4" Square-Oval, 12 Degrees up, IHRA Pro Stock, Big Block Ford, C441, 5.0" Bore Space, 3/8" Thick, CNC Machined Header Flange. Available in mild steel or stainless steel.
**2 flanges are needed for a full set**
- Diameter:
- 2 3/4"
- Engine Make:
- Ford
- Engine Family:
- Big Block Ford
- Cylinder Head/ Engine:
- IHRA Pro Stock, C441
- Port Shape:
- Square-Oval, 12 Degrees Up
- Thickness:
- 3/8"
- **Full Set:
- 2 Required