4-Pattern 229/239 IB, 231/241 OB Hydraulic Roller Cam for Ford 351W
Application: Fits Ford Small Block Engines originally equipped with "Old" firing order and 351 Windsor engines with the "Windsor" firing order
Great all around choice for street applications in modified engines and 2500+ stall or manual transmissions.
Hydraulic Roller: 4-Pattern 281QIO8 - Great all around choice for street Applications in modified engines and 2500+ stall or manual transmissions.
- Technology developed and race-proven in NASCAR.
- Feature a large increase in both area under the curve and stability at high RPM.
- Optimize valve events based on runner length.
- Feature four lobe patterns, one intake and exhaust design for outboard runners and another intake and exhaust design for inboard runners.