Product Description
Mutha' Thumpr™ NSR 234/254 Hydraulic Roller Cams for Ford 4.6/5.4L Modular 3 Valve. Very rough idle, biggest cam for stock heads. Great power above 4900 RPM. Compatible with stock valve springs, benefits from converter & gears, requires cam phaser upgrade & custom tuning.
Stock valve spring capable
| Advertised Intake Duration | 273 |
|---|---|
| Advertised Exhaust Duration | 306 |
| Intake Duration at .050 Inch Lift | 234 |
| Exhaust Duration at .050 Inch Lift | 254 |
| Intake Valve Lift | 0.450 |
| Exhaust Valve Lift |
0.450
|
