COMP Cams XFI VSR Modular 3V Camshafts 127300

Ford 4.6L/5.4L modular 3-valve engines found in 2005 and newer Mustangs are all the rage. So the question on everyone's mind becomes, "How can I further improve the performance of these powerful engines?" COMP Cams XFI VSR Modular 3V (Valve Springs Required) Camshafts deliver a great power improvement over stock levels. These cams are the next step up from the COMP Cams NSR (No Springs Required) Cams and represent a major upgrade in power production. When compared to the NSR, stock valve spring compatible cam series, the VSR cams offer a substantial power gain in the higher rpm ranges. To achieve this, a high-lift design that requires a COMP Cams Beehive Valve Spring upgrade was created to maximize power within the limits of the OEM unmodified cam phasers. These new VSR camshafts are available for both naturally aspirated and supercharged engines, with two levels available in each series; one designed for maximizing mid-range power and torque, while the other maximizes top end horsepower. The performance secret behind these camshafts is in the extensive dyno testing that allowed them to determine precise cam timing events. Combining these optimized timing events with a high-lift lobe design offers substantial improvements in both power and throttle response. Designed to work flawlessly with the factory VCT, which is programmed to retard the cam timing above 4500 rpm, the new COMP Cams XFI VSR Ford 4.6L/5.4L Modular 3V Cams optimize both mid and high rpm performance.Brand: COMP Cams
Manufacturer's Part Number: 127300
Part Type: Camshafts
Product Line: COMP Cams XFI VSR Modular 3V Camshafts
HP Direct Part Number: CCA-127300
UPC: 036584131786
Cam Style: SOHC
Camshaft Use: Street/Strip
Basic Operating RPM Range: 950-6,400
Intake Duration at 050 inch Lift: 222
Exhaust Duration at 050 inch Lift: 235
Duration at 050 inch Lift: 222 int./235 exh.
Advertised Intake Duration: 261
Advertised Exhaust Duration: 278
Advertised Duration: 261 int./278 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.490 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.480 in.
Valve Lift with Factory Rocker Arm Ratio: 0.490 int./0.480 exh.
Lobe Separation (degrees): 115.5
Remanufactured: No
Computer-Controlled Compatible: Yes
Grind Number: XE261H-15.5
Valve Springs Required: Yes
Quantity: Sold as a pair.
Notes: Fits 3V SOHC engines only. Works with tuners, recommend custom tuning.