Chevy Camshafts - Got Lobes?
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Comp Cams has been hard at work on its Thumpr line of retrofit hydraulic roller and hydraulic flat-tappet camshafts, which are designed to sound off with a lopey idle but maintain a wide, torquey powerband. The cams now come in three versions: Thumpr, Mutha Thumpr, and Big Mother Thumpr, as pictured here. Comp has also introduced a new line of CNC-machined aluminum roller rockers, ultra-Gold aluminum, which will clear up to a 1.650-inch-od valvespring. We also checked out a couple of Comp's trick new Lightweight Tool Steel retainers, which are only 2-4 grams heavier than titanium but cost half as much. View Related Article
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