Melling 22405 Class IV Hydraulic Roller Camshaft GM LS Turbo 4.8L 5.3L 6.0L 6.2L

The Melling 22405 is a Class IV High Performance Hydraulic Roller Camshaft engineered specifically for turbocharged GM LS Gen III/IV engines. Designed for serious performance builds, this camshaft delivers aggressive mid-to-high RPM power with specifications optimized for forced induction LS applications.

Camshaft Specifications:

• Camshaft Type: Hydraulic Roller
• Performance Class: Class IV (High Performance / Racing)
• Intake Valve Lift: 0.625 in.
• Exhaust Valve Lift: 0.610 in.
• Intake Duration @ 0.050 in.: 231°
• Exhaust Duration @ 0.050 in.: 233°
• Gear Attachment: 3-Bolt
• Compatible Engines: GM LS 4.8L, 5.3L, 6.0L, 6.2L (Gen III/IV, Non-AFM, Non-VVT)
• Application: Turbocharged / Forced Induction

Class IV Performance Characteristics:

• Rough idle quality
• Strong mid-to-high RPM torque and horsepower
• Intended for serious racing and performance builds
• Best suited for use with a manual transmission or very high stall torque converter
• Requires proper rear axle ratio selection
• Fuel system, exhaust, and ignition upgrades recommended
• Will produce lower-than-stock manifold vacuum — power accessories may require attention

Melling high performance camshafts are developed, engineered, tested, and manufactured to exacting quality standards. Always install new lifters with a new camshaft, and use Melling MELL-LUBE engine assembly lubricant during installation to protect against scoring and galling on initial startup.