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This COMP Cams cam for 5.3L and 6.0L Chevrolet/GMC truck engines offers notable mid and upper RPM gains; the description recommends an exhaust upgrade for best performance and states that a programmer is needed. It’s intended for truck builds where tuning and exhaust improvements are part of the plan, helping unlock stronger higher-rpm output when properly matched to supporting mods.
COMP Cams Camshaft GM G3 XFI 266 HR15
