Nov. 5, 2013, SEMA Show, Las Vegas
Chevrolet engineers have developed a new cylinder head and camshaft package designed to be a direct replacement for 2010 and later Camaro SS models. The new factory power package revolves around a set of CNC-ported LS3 cylinder heads sporting 2.156/1.590-inch valves. This combination is said to flow 350 cfm through its 276cc intake ports. Complementing the cylinder head package is a new LS7 camshaft with 211/230 degrees of duration at 0.050 and 0.558/0.558 lift. The new package, PN 19300535 adds 40 HP. It is designed for engines 4.00-inch or greater bores and is available now through your Chevrolet dealer.