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Edelbrock's heads come with 3/8-inch pushrod guideplates, ARP rocker studs, steel retainers and keepers, and 1.54-inch dual springs (with damper) for cams up to 0.700-inch lift. Comp's steel Pro Magnum 1.7:1 roller rockers are stronger than aluminum rockers yet don't add unnecessary weight at the valve. View Related Article
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