Melling 22424 Class IV Hydraulic Roller Billet Camshaft GM LS Gen III/IV 4.8L 5.3L 5.7L 6.0L 6.2L

The Melling 22424 is a Class IV Performance Hydraulic Roller Billet Camshaft designed for GM Gen III and Gen IV LS engines, including 4.8L, 5.3L, 5.7L, 6.0L, and 6.2L displacements. This is a non-AFM (Active Fuel Management) camshaft requiring a 3-bolt timing sprocket, making it compatible with the broad range of LS-based platforms used in street performance and strip builds.

Engineered as a significant step up from stock, the 22424 delivers aggressive valve timing events suited for modified LS combinations seeking maximum power in the mid-to-upper RPM range. The symmetrical .625"/.625" valve lift on both intake and exhaust, combined with 236°/244° duration at .050" lift, provides a broad, aggressive powerband with a noticeable lopey idle character typical of Class IV grinds.

Camshaft Specifications:

• Performance Class: Class IV
• Cam Type: Hydraulic Roller
• Construction: Billet
• Intake Valve Lift: .625"
• Exhaust Valve Lift: .625"
• Intake Duration @ .050": 236°
• Exhaust Duration @ .050": 244°
• Lobe Separation Angle (LSA): 112°
• Operating RPM Range: 2,000–6,000 RPM
• AFM/VVT Compatible: No
• Timing Sprocket: 3-Bolt
• Engine Family: GM LS Gen III / Gen IV

As a Class IV camshaft, the Melling 22424 is intended for serious performance builds. It is best paired with supporting modifications including upgraded valve springs, performance cylinder heads, headers, a high-stall torque converter or manual transmission, proper rear axle gearing, and a custom tune for optimal results.