COMP Cams CL31-491-9 Xtreme Energy Hydraulic Roller Cam Lifter Kit Ford - 206/212 221-302

The COMP Cams CL31-491-9 is an Xtreme Energy Hydraulic Roller Camshaft and Evolution Lifter Kit designed for Ford 221–302 small block engines. This entry-level Xtreme Energy grind delivers strong street performance with improved throttle response and top-end power, making it an excellent choice for street and street/strip applications.

The "CL" designation in the part number indicates this kit includes both the camshaft and hydraulic roller lifters, along with assembly lube and installation instructions — everything needed to complete the cam swap.

Camshaft Specifications:

• Advertised Duration: 206° Intake / 212° Exhaust
• Duration @ 0.050": 206° Intake / 212° Exhaust
• Valve Lift (1.6:1 rocker ratio): 0.488" Intake / 0.491" Exhaust
• Lobe Separation Angle: 110°
• RPM Range: 1,800 – 5,800
• Cam Type: Hydraulic Roller
• Engine Family: Ford Small Block 221, 260, 289, 302 (5.0L)

Kit Includes:

• Xtreme Energy hydraulic roller camshaft
• COMP Cams Evolution hydraulic roller lifters
• Assembly lube
• COMP Cams decals and installation instructions

Key Features:

• Aggressive lobe profile delivers better throttle response and top-end horsepower than competing cams with equivalent duration figures
• Increased engine vacuum compared to flat tappet designs of similar duration, supporting power brake and emissions equipment
• Hydraulic roller design eliminates the need for break-in procedures required by flat tappet camshafts
• Designed to work with upgraded valvetrain components — stock valve springs and retainers are not recommended with this grind
• Ideal for carbureted street builds seeking improved performance without sacrificing drivability

This is the mildest grind in the Ford small block Xtreme Energy hydraulic roller lineup, making it a popular choice for daily-driven street machines and weekend cruisers seeking a noticeable performance upgrade. Upgrade to the K31-491-9 complete kit if timing chain, valve springs, retainers, and locks are also needed.