COMP Cams 127020 Mutha' Thumpr NSR 234/254 Hydraulic Roller Cams for Ford 4.6/5.4L Modular 3-V for Select Avanti Avanti, Ford Expedition, Ford Explorer, Ford Explorer Sport Trac, Ford F-150, Ford F-250 Super Duty, Ford F-350 Super Duty, Ford Lobo, Ford
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Mutha' Thumpr NSR 234/254 Hydraulic Roller Cam
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.
Fits: 2006-2007 Avanti Avanti, 2005-2014 Ford Expedition, 2006-2010 Ford Explorer, 2007-2010 Ford Explorer Sport Trac, 2004-2010 Ford F-150, 2005-2010 Ford F-250 Super Duty, 2005-2010 Ford F-350 Super Duty, 2009-2010 Ford Lobo, 2006-2010 Ford Mustang, 2006-2008 Lincoln Mark LT, 2005-2014 Lincoln Navigator, 2006-2010 Mercury Mountaineer
Please review Specifications and the detailed fitment table for notes and exceptions.