Product Description
XFI™ Spring & Phaser Mods Required Blower 237/248 Hydraulic Roller Finger Follower Cams for Ford 4.6/5.4L Modular 3V. Big power gains in mid to upper-RPM range for bolt-on blowers with high boost. Rough idle, solid power gains above 4900 RPM, requires spring & phaser upgrade. Custom tuning required. Best with 3.90+ gears & 3000+ stall.
| Advertised Intake Duration | 272 |
|---|---|
| Advertised Exhaust Duration | 287 |
| Intake Duration at .050 Inch Lift | 237 |
| Exhaust Duration at .050 Inch Lift | 248 |
| Intake Valve Lift | 0.547 |
| Exhaust Valve Lift | 0.56 |
| Lobe Separation | 113 |
