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Our choice in valvetrain was a big contributor to the engine's outstanding output. The COMP PN 26918 beehive springs have been well proven in allowing high-rpm performance with hydraulic roller cams. The 1.6:1 ratio COMP Magnum rockers deliver a healthy 0.563-inch lift, a big advantage compared to the 0.528 inch that a stock ratio rocker would provide. The pushrods are just our cleaned-up OEM units. View Related Article
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