Chevy Camshafts - Got Lobes?
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When GM created the LS engine family, it increased the cam core size from the traditional 1.868 inches (approximately 47.5 mm) to 2.165 inches, or 55 mm. Lunati has taken this technology a step further by creating an even bigger 60mm core. Why is bigger better? According to James Humphrey, the super-sized cam core was created for use in the LSX block and the World Products Warhawk block. "The LSX can run a 4.250x4.500-inch bore and stroke for 500-plus cubic inches, and it's capable of 2,500 hp," he explains. "The bigger base circle gives better valvetrain dynamics and higher rpm," he continues. "We can be more aggressive with our profiles and maintain stability, since there is little deflection." And while Humphrey admits that we'll "eventually" see street-oriented cores produced, this is definitely a race piece for now. View Related Article
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