XFI NSR Blower 222/239 Hydraulic Roller Cams for Ford 4.6/5.4L Modular 3 Valve
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XFIª No Springs Required Blower 222/239 Hydraulic Roller Finger Follower Cams for Ford 4.6/5.4L Modular 3V. Mid to upper range cam for bolt-on blowers running higher boost psi. Major power gains above 4900 RPM, compatible with stock springs. Best with 3.73+ gears & 2500 stall. Great idle.
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