COMP Cams 127020 Mutha' Thumpr NSR 234/254 Hydraulic Roller Cams for Ford 4.6/5.4L Modular 3-V
- SOHC - Mutha' Thumpr NSR (NO SPRINGS REQUIRED): Very rough idle, biggest cam for stock heads. Great power above 4900 rpm. Compatible with stock valve springs, benefits from converter and gears, requires cam phaser upgrade and custom tuning..
- 273/306 Advertised Duration, 234/254 Duration @ .050 inch, .450 inch/.450 inch Lift, 109 Lobe Separation.
- Part #26113-24 valve springs available but not required.
- Steel retainer part #710-24 and titanium retainer part #702-24 also available.