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Street roller cams have tighter lash settings to ensure less valvetrain stress than a flat tappet camshaft. We're reusing the Comp Pro-Magnum rockers (without needle bearing fulcrums) and Comp's Hi-Tech 3/8-inch pushrods. The Comp pushrods and Lunati lifters both have an oil hole going through the middle of them. That's not necessary since the rockers are lubed through the block and heads and then into the rocker shafts.