COMP CAMS XFI SPR Blw 245/256 H-Rlr Cam Ford Md 3V COM127650

XFI Spring and Phaser Mods Required Blower 245/256 Hydraulic Roller Finger Follower Cams for Ford 4.6/5.4L Modular 3V. Max effort blower Cam with very rough idle, needs ported heads. Great mid-range power with incredible gains up to 7000+ RPM. Solid power gains above 4900 RPM, requires spring and phaser upgrade. Custom tuning required. 4.10+ Gears and 3200+ Stall.