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The COMP Cams Thumpr camshaft for 2009‑plus Dodge VVT 5.7L/6.4L HEMI applies Thumpr NSR technology to modern GEN III/IV HEMI engines, delivering the Thumpr idle and stronger mid‑to‑upper RPM performance while preserving low‑RPM torque. The cam does not require valve spring upgrades; COMP recommends an ECU tune, DOD deletion and a phaser limiter for VVT‑equipped GEN IV engines for proper operation.
COMP Cams Camshaft 2009+ Dodge VVT 5.7/6.4L Hemi Thumpr
