Product Description
XFI™ Spring & Phaser Mods Required 237/244 Hydraulic Roller Finger Follower Cams for Ford 4.6/5.4L Modular 3V. Max effort street/strip cam with very rough idle, needs ported heads. Good mid-range with incredible power up to 7000+ RPM. Solid power gains above 4900 RPM, requires spring & phaser upgrade. Custom tuning required. 4.10+ gears and 3200+ stall.
Springs required.
| Advertised Intake Duration | 272 |
|---|---|
| Advertised Exhaust Duration | 283 |
| Intake Duration at .050 Inch Lift | 237 |
| Exhaust Duration at .050 Inch Lift | 244 |
| Intake Valve Lift | 0.547 |
| Exhaust Valve Lift | 0.56 |
| Lobe Separation | 112 |
