COMP Cams CL33-781-11 Magnum 243/243 Solid Roller Cam and Lifter Kit for Ford FE 352-428

The COMP Cams CL33-781-11 is a Magnum Series 243/243 solid roller cam and lifter kit engineered for Ford FE big-block engines (352–428 c.i., 1963–1977). Built from billet steel, this street/strip camshaft delivers a broad powerband with an operating RPM range of 2,200–6,500 RPM, making it a strong choice for serious street performance and competition applications.

The Magnum solid roller design provides aggressive valve lift and precise valvetrain control at high RPM, maximizing power output while maintaining durability. Note that this cam produces a rough idle and requires headers, low rear-end gears, and a manual or automatic transmission with a 3,000+ RPM stall converter. A minimum compression ratio of 9.5:1 is recommended. Valve springs are required (not included).

Camshaft Specifications:

• Camshaft Series: Magnum
• Grind Number: 288R
• Cam Type: Solid Roller (Mechanical Roller)
• Advertised Intake / Exhaust Duration: 292° / 292°
• Duration at .050" Lift (Intake / Exhaust): 248° / 248°
• Intake / Exhaust Valve Lift: 0.645" / 0.645"
• Lobe Separation Angle: 110°
• Basic Operating RPM Range: 2,200–6,500
• Camshaft Material: Billet Steel
• Camshaft Gear Attachment: 1-Bolt
• Engine Family: Ford FE 352–428 c.i. (1963–1977)

Kit Includes:

• Billet steel solid roller camshaft
• Solid roller lifters
• Assembly lube
• Decals and instructions

For a more complete valvetrain upgrade, this kit can be stepped up to the K33-781-11 complete kit, which adds valve springs, retainers, locks, valve stem seals, and a timing chain set. Valve springs are required and must be sourced separately when using this CL-Kit.