SKU: 4994


Brand:COMP Cams

Manufacturer’s Part Number:127150

Part Type:Camshafts

Product Line:COMP Cams XFI VSR Modular 3V Camshafts

Summit Racing Part Number:CCA-127150


Cam Style:Hydraulic roller follower

Basic Operating RPM Range:850-6,200

Intake Duration at 050 inch Lift:214

Exhaust Duration at 050 inch Lift:231

Duration at 050 inch Lift:214 int./231 exh.

Advertised Intake Duration:253

Advertised Exhaust Duration:274

Advertised Duration:253 int./274 exh.

Intake Valve Lift with Factory Rocker Arm Ratio:0.480 in.

Exhaust Valve Lift with Factory Rocker Arm Ratio:0.475 in.

Valve Lift with Factory Rocker Arm Ratio:0.480 int./0.475 exh.

Lobe Separation (degrees):115

Computer-Controlled Compatible:Yes

Grind Number:XE253H-115

Valve Springs Required:Yes

Quantity:Sold as a pair.

Notes:Fits 3V SOHC engines only, requires custom tuning.

The Ford 4.6L/5.4L modular 3-valve engines found in 2005 & 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?” The new COMP Cams XFI VSR Ford 4.6L/5.4L 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 the COMP Cams VSR Ford 3V Camshafts is in the extensive dyno testing that allowed us 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.

Additional information

Weight 16 lbs
Dimensions 24 × 5 × 2 in


Model Year

, ,


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.