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Aftermarket roller rockers are a great way to free up parasitic frictional losses and maintain proper rocker arm geometry in performance applications. We ordered ours from Com Cams in the stock 1.5 ratio for use with the 3/8-inch rocker studs. Because LT1s use a self-aligning tip and require a narrow body to clear the valve cover bolts stands, conventional SBC rockers won't work here, so make sure you get the right ones. You'll also need a set of proper-length hardened pushrods, so go for the 7.3-inch ones like we did. It's available under part number 7949-16 for a complete set.