Trick Flow TrackMax Hydraulic Roller Camshaft & Valve Spring Upgrade Kit for Ford 4.6L/5.4L 2V Engines, 550/.550 Lift, Chromoly Retainers, 275lbs Spring

Specs:
Cam Style: SOHC
Basic Operating RPM Range: 1,500-5,000
Camshaft Use: Street/Strip
Camshaft Manufacturers Description: 1.050 in.
Intake Duration at 050 inch Lift: 228
Exhaust Duration at 050 inch Lift: 230
Duration at 050 inch Lift: 228 int./230 exh.
Advertised Intake Duration: 265
Advertised Exhaust Duration: 265
Advertised Duration: 262 int./264 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.550 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.550 in.
Valve Lift with Factory Rocker Arm Ratio: 0.550 int./0.550 exh.
Lobe Separation (degrees): 112
Camshaft Gear Attachment: 1-bolt
Computer-Controlled Compatible: Yes
Lifters Included: No
Valve Springs Included: Yes
Outside Diameter of Outer Spring (in.): 1.050 in.
Retainers Included: Yes
Locks Included: Yes
Valve Stem Seals Included: Yes
Timing Chain and Gears Included: No
Assembly Lubricant Included: No
Pushrods Included: No
Rocker Arms Included: No
Gaskets Included: No
Valve Springs Required: Yes
Quantity: Sold as a kit.