Professional Installation Recommended

This performance camshaft package is intended for installation by a qualified engine builder, certified machinist, or automotive technician experienced with 6.4L Apache HEMI valvetrain systems and variable cam timing.

A compatible phaser limiter or phaser lock is required and is not included. Engine calibration may also be necessary after installation.

Non-MDS Configuration Notice

This package includes premium non-MDS hydraulic roller lifters. It is intended for compatible non-MDS engine configurations or MDS-delete builds.

The supplied product information does not indicate that MDS block-off plugs, timing components, pushrods, tuning devices, or additional MDS-delete hardware are included.

Recommended Inspection Procedures

• Inspect the camshaft bearings before installation.
• Inspect rocker arms, rocker shafts, pushrods, and valve tips.
• Verify piston-to-valve clearance.
• Verify pushrod length and valvetrain geometry.
• Inspect timing chain, guides, tensioner, sprockets, and phaser.
• Confirm the correct phaser limiter or phaser lock before final assembly.
• Clean all engine oil passages thoroughly.
• Remove debris from previous camshaft or lifter failures.
• Prime the lubrication system before initial startup.
• Verify engine oil pressure before placing the engine into service.
• Follow COMP Cams installation procedures and factory torque specifications.
• Use fresh engine oil and a new oil filter after assembly.

Fitment Notice

This camshaft is designed for compatible 6.4L Apache HEMI engines only. Vehicle model and year alone do not guarantee compatibility. Verify VIN, engine configuration, lifter style, and phaser requirements before ordering.

Performance Component Notice

Actual horsepower, torque, idle quality, drivability, and engine characteristics vary depending on the complete engine combination, supporting modifications, compression ratio, exhaust system, calibration, and installation quality. No specific power increase is guaranteed.

Warranty Information

The stated lifetime warranty applies when installed by a certified machinist and remains subject to the manufacturer's warranty requirements. Proof of professional installation may be required.

Warranty coverage may not apply to damage resulting from improper installation, incorrect tuning, inadequate lubrication, improper valvetrain geometry, insufficient piston-to-valve clearance, overheating, or failure to correct the original cause of engine damage.