The COMP Cams Pro Magnum hydraulic lifter is a high‑rpm flat‑tappet lifter engineered to resist pumping up and keep proper piston position under elevated engine speeds. It delivers stronger valve control than standard hydraulic lifters and is specified for AMC V8s (290–401 and 199–258) and Chrysler small‑ and big‑block applications including 273–360 and 383–440.
COMP Cams Pro-Magnum Hydr Lifter Chrysler