Roller Cam Kit - 03-08 5.7/6.4 Hemi Stg 3

The Roller Cam Kit - 03-08 5.7/6.4 Hemi Stg 3 from COMP CAMS is engineered for Mopar Gen III Hemi engine builders and enthusiasts seeking significant performance gains without sacrificing reliability. This Stage 3 hydraulic roller camshaft kit is purpose-built for 2003–2008 5.7L and 6.4L Hemi platforms, delivering the aggressive valve timing and lift needed for naturally aspirated power builds, street performance applications, and mild forced-induction setups. Whether you're upgrading a truck, Challenger, or Charger, this complete kit eliminates the guesswork of sourcing individual components.

The kit features a hydraulic roller profile with 0.632-inch intake lift and 0.609-inch exhaust lift, paired with 281-degree intake and 284-degree exhaust duration and a 117.5-degree lobe separation angle, producing a responsive midrange and peak horsepower curve ideal for street-strip duty. Hydraulic roller technology provides consistent valve actuation, reduced friction compared to flat-tappet designs, and quieter operation—critical advantages for durable, high-revving builds. The Stage 3 specification balances aggressive timing with stock-stroke geometry, avoiding the extreme overlap that can compromise vacuum and idle quality on carbureted or naturally aspirated engines.

Installation is streamlined because COMP CAMS includes all necessary components: lifters, valve springs, retainers, locks, seats, and pushrods—everything required for a complete top-end refresh without hunting down compatibility issues. This comprehensive approach saves hours of research and sourcing while ensuring all components are engineered to work together. Suitable for experienced engine builders and professional machine shops, the Roller Cam Kit - 03-08 5.7/6.4 Hemi Stg 3 is the foundation of a reliable, repeatable performance platform for any serious Hemi project.